MX-5 Miata Mazdaspeed 2004-05 (BP-ZET turbo, no VVT) → Haltech Elite 2500 HT-151300 (auto)
MX-5 Miata Mazdaspeed 2004-05 (BP-ZET turbo, no VVT) — Haltech — Elite 2500
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-17
Before you start
Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
| Status | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 54 wires · 8 connectors · 0 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-2-P | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | ELITE2500-A-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | ELITE2500-B-11 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-3-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-3-B | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-4-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | ELITE2500-A-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | ELITE2500-A-11 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-4-O | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-0V-1 | ELITE2500-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-0V-1 | ELITE2500-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-0V-1 | ELITE2500-B-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-4-L | ELITE2500-A-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-3-Y | ELITE2500-B-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | ELITE2500-B-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-3-V | ELITE2500-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | ELITE2500-B-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-4-M | ELITE2500-B-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-3-F | ELITE2500-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-3-I | ELITE2500-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-2-A | ELITE2500-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-2-D | ELITE2500-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-2-G | ELITE2500-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-2-J | ELITE2500-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-4-X | ELITE2500-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-4-V | ELITE2500-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-4-P | ELITE2500-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-4-S | ELITE2500-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-2-B | ELITE2500-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-2-C | ELITE2500-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-2-K | ELITE2500-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-2-M | ELITE2500-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-3-H | ELITE2500-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-2-O | ELITE2500-B-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-4-D | ELITE2500-A-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-4-E | ELITE2500-A-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-3-J | ELITE2500-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-3-P | ELITE2500-A-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-2-Q | ELITE2500-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-2-E | ELITE2500-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-2-F | ELITE2500-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-2-H | ELITE2500-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-4-AE | ELITE2500-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-4-AA | ELITE2500-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-4-W | ELITE2500-B-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-4-R | ELITE2500-B-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-4-N | ELITE2500-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-4-AD | ELITE2500-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-3-T | ELITE2500-B-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-3-S | ELITE2500-B-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-4-B | ELITE2500-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-4-C | ELITE2500-B-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-4-F | ELITE2500-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ |
Bench test (before first power-up)
Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).
| # | Probe A | Probe B | Expect | Why | Reading |
|---|---|---|---|---|---|
| 1 | ELITE2500-A-26 | ELITE2500-A-10 | open (OL) | +12 V supply must not touch power ground | |
| 2 | ELITE2500-A-26 | ELITE2500-B-14 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | ELITE2500-A-9 | ELITE2500-B-14 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 4 | ELITE2500-A-10 | ELITE2500-A-9 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | ELITE2500-A-26 | ELITE2500-A-9 | open (OL) | +12 V supply must not touch 5 V sensor reference |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
ELITE2500-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | DPO 2 | — | W32 | — | 0.5 | OEM-2-K | — | — | — |
| 10 | Battery ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | Battery ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 12 | +8V DC | — | — | — | — | — | — | — | — |
| 13 | 12V ignition input | — | W29 | — | 0.5 | OEM-4-S | — | — | — |
| 14 | AVI 10 (TPS) | — | W54 | — | 0.5 | OEM-4-F | — | — | — |
| 15 | AVI 9 (MAP) | — | W49 | — | 0.5 | OEM-4-AD | — | — | — |
| 16 | AVI 2 | — | W27 | — | 0.5 | OEM-4-V | — | — | — |
| 17 | AVI 3 | — | W44 | — | 0.5 | OEM-4-AE | — | — | — |
| 18 | DPO 1 | — | W31 | — | 0.5 | OEM-2-C | — | — | — |
| 19 | INJ 1 | — | W22 | — | 0.5 | OEM-2-A | — | — | — |
| 2 | AVI 4 | — | W45 | — | 0.5 | OEM-4-AA | — | — | — |
| 20 | INJ 2 | — | W23 | — | 0.5 | OEM-2-D | — | — | — |
| 21 | INJ 3 | — | W24 | — | 0.5 | OEM-2-G | — | — | — |
| 22 | INJ 4 | — | W25 | — | 0.5 | OEM-2-J | — | — | — |
| 23 | DPO 3 | — | W34 | — | 0.5 | OEM-3-H | — | — | — |
| 24 | DPO 5 (fuel pump trigger) | — | W33 | — | 0.5 | OEM-2-M | — | — | — |
| 25 | DPO 6 (ECR OUT) | — | W30 | — | 0.5 | OEM-2-B | — | — | — |
| 26 | ECU injector power input | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 27 | INJ 5 | — | W40 | — | 0.5 | OEM-2-Q | — | — | — |
| 28 | INJ 6 | — | W41 | — | 0.5 | OEM-2-E | — | — | — |
| 29 | INJ 7 | — | W42 | — | 0.5 | OEM-2-F | — | — | — |
| 3 | IGN 1 | — | W20 | — | 0.5 | OEM-3-F | — | — | — |
| 30 | INJ 8 | — | W43 | — | 0.5 | OEM-2-H | — | — | — |
| 31 | Stepper 1 P1 / DPO | — | W36 | — | 0.5 | OEM-4-D | — | — | — |
| 32 | Stepper 1 P2 / DPO | — | W37 | — | 0.5 | OEM-4-E | — | — | — |
| 33 | Stepper 1 P3 / DPO | — | W38 | — | 0.5 | OEM-3-J | — | — | — |
| 34 | Stepper 1 P4 / DPO | — | W39 | — | 0.5 | OEM-3-P | — | — | — |
| 4 | IGN 2 | — | W21 | — | 0.5 | OEM-3-I | — | — | — |
| 5 | IGN 3 | — | — | — | — | — | — | — | — |
| 6 | IGN 4 | — | — | — | — | — | — | — | — |
| 7 | IGN 5 | — | — | — | — | — | — | — | — |
| 8 | IGN 6 | — | — | — | — | — | — | — | — |
| 9 | +5V DC | — | W14 | — | 0.5 | OEM-4-L | — | — | — |
ELITE2500-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Crank (Trigger) (+) | — | W15 | — | 0.5 | OEM-3-Y | — | — | — |
| 10 | SPI 3 | — | W52 | — | 0.5 | OEM-4-B | — | — | — |
| 11 | +13.8V ECU supply | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 12 | AVI 6 (O2 Input 1) | — | W48 | — | 0.5 | OEM-4-N | — | — | — |
| 13 | AVI 1 (O2 Input 2) | — | W26 | — | 0.5 | OEM-4-X | — | — | — |
| 14 | Signal ground | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 15 | Signal ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Signal ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 17 | IGN 7 | — | — | — | — | — | — | — | — |
| 18 | IGN 8 | — | — | — | — | — | — | — | — |
| 19 | DPO 4 | — | W35 | — | 0.5 | OEM-2-O | — | — | — |
| 2 | Cam (Home) (+) | — | W17 | — | 0.5 | OEM-3-V | — | — | — |
| 20 | AVI 5 | — | W46 | — | 0.5 | OEM-4-W | — | — | — |
| 21 | KNOCK 1 | — | W19 | — | 0.5 | OEM-4-M | — | — | — |
| 22 | KNOCK 2 | — | — | — | — | — | — | — | — |
| 23 | CAN H | — | — | — | — | — | — | — | — |
| 24 | CAN L | — | — | — | — | — | — | — | — |
| 25 | DBW 1 / DPO | — | — | — | — | — | — | — | — |
| 26 | DBW 2 / DPO | — | — | — | — | — | — | — | — |
| 3 | AVI 7 (Air Temp) | — | W47 | — | 0.5 | OEM-4-R | — | — | — |
| 4 | AVI 8 (Coolant Temp) | — | W28 | — | 0.5 | OEM-4-P | — | — | — |
| 5 | Crank (Trigger) (−) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Cam (Home) (−) | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 7 | SPI 4 | — | W53 | — | 0.5 | OEM-4-C | — | — | — |
| 8 | SPI 1 | — | W50 | — | 0.5 | OEM-3-T | — | — | — |
| 9 | SPI 2 | — | W51 | — | 0.5 | OEM-3-S | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Injector 1 | — | W22 | — | 0.5 | ELITE2500-A-19 | — | — | — |
| B | Cooling fan relay | — | W30 | — | 0.5 | ELITE2500-A-25 | — | — | — |
| C | Condenser fan relay | — | W31 | — | 0.5 | ELITE2500-A-18 | — | — | — |
| D | Injector 2 | — | W23 | — | 0.5 | ELITE2500-A-20 | — | — | — |
| E | EGR valve | — | W41 | — | 0.5 | ELITE2500-A-28 | — | — | — |
| F | EGR valve | — | W42 | — | 0.5 | ELITE2500-A-29 | — | — | — |
| G | Injector 3 | — | W24 | — | 0.5 | ELITE2500-A-21 | — | — | — |
| H | EGR valve | — | W43 | — | 0.5 | ELITE2500-A-30 | — | — | — |
| I | EGR valve | — | — | — | — | — | — | — | — |
| J | Injector 4 | — | W25 | — | 0.5 | ELITE2500-A-22 | — | — | — |
| K | A/C clutch relay | — | W32 | — | 0.5 | ELITE2500-A-1 | — | — | — |
| L | NC | — | — | — | — | — | — | — | — |
| M | Fuel pump relay | — | W33 | — | 0.5 | ELITE2500-A-24 | — | — | — |
| N | VTCS solenoid (intake butterflies) | — | — | — | — | — | — | — | — |
| O | Fuel pump relay (non-immobiliser) | — | W35 | — | 0.5 | ELITE2500-B-19 | — | — | — |
| P | ISC valve +14V feed | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| Q | ISC valve low side | — | W40 | — | 0.5 | ELITE2500-A-27 | — | — | — |
| R | Malfunction indicator lamp (MIL) | — | — | — | — | — | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| C | Purge solenoid valve | — | — | — | — | — | — | — | — |
| D | EGR boost solenoid | — | — | — | — | — | — | — | — |
| E | NC | — | — | — | — | — | — | — | — |
| F | Ignition 1 (coils 1+4, wasted spark) | — | W20 | — | 0.5 | ELITE2500-A-3 | — | — | — |
| G | NC | — | — | — | — | — | — | — | — |
| H | Main relay | — | W34 | — | 0.5 | ELITE2500-A-23 | — | — | — |
| I | Ignition 2 (coils 2+3, wasted spark) | — | W21 | — | 0.5 | ELITE2500-A-4 | — | — | — |
| J | Front O2 heater | — | W38 | — | 0.5 | ELITE2500-A-33 | — | — | — |
| K | EVAP leak detection pump | — | — | — | — | — | — | — | — |
| L | NC | — | — | — | — | — | — | — | — |
| M | Alternator control | — | — | — | — | — | — | — | — |
| N | NC | — | — | — | — | — | — | — | — |
| O | Tachometer output | — | — | — | — | — | — | — | — |
| P | Rear O2 heater | — | W39 | — | 0.5 | ELITE2500-A-34 | — | — | — |
| Q | Data link connector (K-line) | — | — | — | — | — | — | — | — |
| R | NC | — | — | — | — | — | — | — | — |
| S | Immobiliser | — | W51 | — | 0.5 | ELITE2500-B-9 | — | — | — |
| T | Vehicle speed | — | W50 | — | 0.5 | ELITE2500-B-8 | — | — | — |
| U | Charge lamp | — | — | — | — | — | — | — | — |
| V | Cam position (CMP) | — | W17 | — | 0.5 | ELITE2500-B-2 | — | — | — |
| W | NC | — | — | — | — | — | — | — | — |
| X | NC | — | — | — | — | — | — | — | — |
| Y | Crank position (CKP) | — | W15 | — | 0.5 | ELITE2500-B-1 | — | — | — |
| Z | NC | — | — | — | — | — | — | — | — |
OEM-4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| AA | Rear O2 signal | — | W45 | — | 0.5 | ELITE2500-A-2 | — | — | — |
| AB | NC | — | — | — | — | — | — | — | — |
| AC | Data link connector (DLC TEN, turbo) | — | — | — | — | — | — | — | — |
| AD | Fuel level | — | W49 | — | 0.5 | ELITE2500-A-15 | — | — | — |
| AE | BARO/MAP sensor (turbo boost pressure) | — | W44 | — | 0.5 | ELITE2500-A-17 | — | — | — |
| AF | ECU power +14V (main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| AG | Constant +12V | — | — | — | — | — | — | — | — |
| AH | EVAP leak detection pump solenoid valve | — | — | — | — | — | — | — | — |
| B | Brake switch | — | W52 | — | 0.5 | ELITE2500-B-10 | — | — | — |
| C | Power steering pressure switch | — | W53 | — | 0.5 | ELITE2500-B-7 | — | — | — |
| D | Boost control solenoid (turbo) | — | W36 | — | 0.5 | ELITE2500-A-31 | — | — | — |
| E | Boost control solenoid (turbo) | — | W37 | — | 0.5 | ELITE2500-A-32 | — | — | — |
| F | A/C request | — | W54 | — | 0.5 | ELITE2500-A-14 | — | — | — |
| G | NC | — | — | — | — | — | — | — | — |
| H | Neutral switch | — | — | — | — | — | — | — | — |
| I | Clutch switch | — | — | — | — | — | — | — | — |
| J | VTCS vacuum switch | — | — | — | — | — | — | — | — |
| K | NC | — | — | — | — | — | — | — | — |
| L | +5V sensor supply | — | W14 | — | 0.5 | ELITE2500-A-9 | — | — | — |
| M | Knock sensor | — | W19 | — | 0.5 | ELITE2500-B-21 | — | — | — |
| N | Intake air temperature (IAT) | — | W48 | — | 0.5 | ELITE2500-B-12 | — | — | — |
| O | Signal ground | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| P | Coolant temperature (ECT) | — | W28 | — | 0.5 | ELITE2500-B-4 | — | — | — |
| Q | NC | — | — | — | — | — | — | — | — |
| R | Intake air temperature 2 (IAT2, turbo) | — | W47 | — | 0.5 | ELITE2500-B-3 | — | — | — |
| S | Ignition switch (IG1) sense | — | W29 | — | 0.5 | ELITE2500-A-13 | — | — | — |
| T | Generator output voltage (terminal P) | — | — | — | — | — | — | — | — |
| U | NC | — | — | — | — | — | — | — | — |
| V | Throttle position (TPS) | — | W27 | — | 0.5 | ELITE2500-A-16 | — | — | — |
| W | Front O2 signal | — | W46 | — | 0.5 | ELITE2500-B-20 | — | — | — |
| X | Mass air flow (MAF) | — | W26 | — | 0.5 | ELITE2500-B-13 | — | — | — |
| Y | NC | — | — | — | — | — | — | — | — |
| Z | TCM (automatic only) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W10 | — | 0.5 | OEM-4-O | — | — | — |
| 1 | — | — | W11 | — | 0.5 | ELITE2500-B-14 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | ELITE2500-B-15 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | ELITE2500-B-16 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | ELITE2500-B-5 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | ELITE2500-B-6 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-2-P | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-4-AF | — | — | — |
| 1 | — | — | W3 | — | 0.85 | ELITE2500-A-26 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | ELITE2500-B-11 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-3-A | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-3-B | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-4-A | — | — | — |
| 1 | — | — | W8 | — | 0.85 | ELITE2500-A-10 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | ELITE2500-A-11 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-2-A | Injector 1 | injector_out | ELITE2500-A-19 | INJ 1 | injector_out | corroborated | |
| OEM-2-B | Cooling fan relay | low_side_out | ELITE2500-A-25 | DPO 6 (ECR OUT) | low_side_out | corroborated | |
| OEM-2-C | Condenser fan relay | low_side_out | ELITE2500-A-18 | DPO 1 | low_side_out | corroborated | |
| OEM-2-D | Injector 2 | injector_out | ELITE2500-A-20 | INJ 2 | injector_out | corroborated | |
| OEM-2-E | EGR valve | low_side_out | ELITE2500-A-28 | INJ 6 | injector_out | corroborated | |
| OEM-2-F | EGR valve | low_side_out | ELITE2500-A-29 | INJ 7 | injector_out | corroborated | |
| OEM-2-G | Injector 3 | injector_out | ELITE2500-A-21 | INJ 3 | injector_out | corroborated | |
| OEM-2-H | EGR valve | low_side_out | ELITE2500-A-30 | INJ 8 | injector_out | corroborated | |
| OEM-2-I | EGR valve | low_side_out | — | — | — | corroborated | |
| OEM-2-J | Injector 4 | injector_out | ELITE2500-A-22 | INJ 4 | injector_out | corroborated | |
| OEM-2-K | A/C clutch relay | low_side_out | ELITE2500-A-1 | DPO 2 | low_side_out | corroborated | |
| OEM-2-L | NC | — | — | — | — | single_source | |
| OEM-2-M | Fuel pump relay | low_side_out | ELITE2500-A-24 | DPO 5 (fuel pump trigger) | low_side_out | corroborated | |
| OEM-2-N | VTCS solenoid (intake butterflies) | low_side_out | — | — | — | corroborated | |
| OEM-2-O | Fuel pump relay (non-immobiliser) | low_side_out | ELITE2500-B-19 | DPO 4 | low_side_out | corroborated | |
| OEM-2-P | ISC valve +14V feed | power_in | ELITE2500-A-26 + ELITE2500-B-11 | ECU injector power input + +13.8V ECU supply | power_in | corroborated | |
| OEM-2-Q | ISC valve low side | low_side_out | ELITE2500-A-27 | INJ 5 | injector_out | corroborated | |
| OEM-2-R | Malfunction indicator lamp (MIL) | low_side_out | — | — | — | corroborated | |
| OEM-3-A | Power ground | ground | ELITE2500-A-10 + ELITE2500-A-11 | Battery ground + Battery ground | ground | corroborated | |
| OEM-3-B | Power ground | ground | ELITE2500-A-10 + ELITE2500-A-11 | Battery ground + Battery ground | ground | corroborated | |
| OEM-3-C | Purge solenoid valve | low_side_out | — | — | — | corroborated | |
| OEM-3-D | EGR boost solenoid | — | — | — | — | conflict | |
| OEM-3-E | NC | — | — | — | — | single_source | |
| OEM-3-F | Ignition 1 (coils 1+4, wasted spark) | ignition_out | ELITE2500-A-3 | IGN 1 | ignition_out | corroborated | |
| OEM-3-G | NC | — | — | — | — | single_source | |
| OEM-3-H | Main relay | low_side_out | ELITE2500-A-23 | DPO 3 | low_side_out | corroborated | |
| OEM-3-I | Ignition 2 (coils 2+3, wasted spark) | ignition_out | ELITE2500-A-4 | IGN 2 | ignition_out | corroborated | |
| OEM-3-J | Front O2 heater | low_side_out | ELITE2500-A-33 | Stepper 1 P3 / DPO | switch_out | corroborated | |
| OEM-3-K | EVAP leak detection pump | low_side_out | — | — | — | corroborated | |
| OEM-3-L | NC | — | — | — | — | single_source | |
| OEM-3-M | Alternator control | low_side_out | — | — | — | corroborated | |
| OEM-3-N | NC | — | — | — | — | single_source | |
| OEM-3-O | Tachometer output | tacho_out | — | — | — | corroborated | |
| OEM-3-P | Rear O2 heater | low_side_out | ELITE2500-A-34 | Stepper 1 P4 / DPO | switch_out | corroborated | |
| OEM-3-Q | Data link connector (K-line) | serial | — | — | — | corroborated | |
| OEM-3-R | NC | — | — | — | — | single_source | |
| OEM-3-S | Immobiliser | digital_in | ELITE2500-B-9 | SPI 2 | digital_in | corroborated | |
| OEM-3-T | Vehicle speed | digital_in | ELITE2500-B-8 | SPI 1 | digital_in | corroborated | |
| OEM-3-U | Charge lamp | low_side_out | — | — | — | corroborated | |
| OEM-3-V | Cam position (CMP) | trigger_in | ELITE2500-B-2 | Cam (Home) (+) | trigger_in | corroborated | |
| OEM-3-W | NC | — | — | — | — | single_source | |
| OEM-3-X | NC | — | — | — | — | single_source | |
| OEM-3-Y | Crank position (CKP) | trigger_in | ELITE2500-B-1 | Crank (Trigger) (+) | trigger_in | corroborated | |
| OEM-3-Z | NC | — | — | — | — | single_source | |
| OEM-4-A | Power ground | ground | ELITE2500-A-10 + ELITE2500-A-11 | Battery ground + Battery ground | ground | corroborated | |
| OEM-4-AA | Rear O2 signal | lambda_nb_in | ELITE2500-A-2 | AVI 4 | analog_in | corroborated | |
| OEM-4-AB | NC | — | — | — | — | single_source | |
| OEM-4-AC | Data link connector (DLC TEN, turbo) | serial | — | — | — | BrY | single_source |
| OEM-4-AD | Fuel level | analog_in | ELITE2500-A-15 | AVI 9 (MAP) | analog_in | corroborated | |
| OEM-4-AE | BARO/MAP sensor (turbo boost pressure) | analog_in | ELITE2500-A-17 | AVI 3 | analog_in | LY | single_source |
| OEM-4-AF | ECU power +14V (main relay) | power_in | ELITE2500-A-26 + ELITE2500-B-11 | ECU injector power input + +13.8V ECU supply | power_in | corroborated | |
| OEM-4-AG | Constant +12V | power_in | — | — | — | corroborated | |
| OEM-4-AH | EVAP leak detection pump solenoid valve | low_side_out | — | — | — | corroborated | |
| OEM-4-B | Brake switch | digital_in | ELITE2500-B-10 | SPI 3 | digital_in | corroborated | |
| OEM-4-C | Power steering pressure switch | digital_in | ELITE2500-B-7 | SPI 4 | digital_in | corroborated | |
| OEM-4-D | Boost control solenoid (turbo) | high_side_out | ELITE2500-A-31 | Stepper 1 P1 / DPO | switch_out | Y | single_source |
| OEM-4-E | Boost control solenoid (turbo) | high_side_out | ELITE2500-A-32 | Stepper 1 P2 / DPO | switch_out | Y | single_source |
| OEM-4-F | A/C request | digital_in | ELITE2500-A-14 | AVI 10 (TPS) | analog_in | corroborated | |
| OEM-4-G | NC | — | — | — | — | single_source | |
| OEM-4-H | Neutral switch | digital_in | — | — | — | corroborated | |
| OEM-4-I | Clutch switch | digital_in | — | — | — | corroborated | |
| OEM-4-J | VTCS vacuum switch | digital_in | — | — | — | corroborated | |
| OEM-4-K | NC | — | — | — | — | single_source | |
| OEM-4-L | +5V sensor supply | vref | ELITE2500-A-9 | +5V DC | vref | corroborated | |
| OEM-4-M | Knock sensor | knock_in | ELITE2500-B-21 | KNOCK 1 | knock_in | corroborated | |
| OEM-4-N | Intake air temperature (IAT) | temp_in | ELITE2500-B-12 | AVI 6 (O2 Input 1) | analog_in | corroborated | |
| OEM-4-O | Signal ground | sensor_ground | ELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6 | Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−) | sensor_ground + trigger_in | corroborated | |
| OEM-4-P | Coolant temperature (ECT) | temp_in | ELITE2500-B-4 | AVI 8 (Coolant Temp) | analog_in | corroborated | |
| OEM-4-Q | NC | — | — | — | — | single_source | |
| OEM-4-R | Intake air temperature 2 (IAT2, turbo) | temp_in | ELITE2500-B-3 | AVI 7 (Air Temp) | analog_in | VY | single_source |
| OEM-4-S | Ignition switch (IG1) sense | digital_in | ELITE2500-A-13 | 12V ignition input | digital_in | corroborated | |
| OEM-4-T | Generator output voltage (terminal P) | — | — | — | — | corroborated | |
| OEM-4-U | NC | — | — | — | — | single_source | |
| OEM-4-V | Throttle position (TPS) | analog_in | ELITE2500-A-16 | AVI 2 | analog_in | corroborated | |
| OEM-4-W | Front O2 signal | lambda_nb_in | ELITE2500-B-20 | AVI 5 | analog_in | corroborated | |
| OEM-4-X | Mass air flow (MAF) | analog_in | ELITE2500-B-13 | AVI 1 (O2 Input 2) | analog_in | corroborated | |
| OEM-4-Y | NC | — | — | — | — | single_source | |
| OEM-4-Z | TCM (automatic only) | — | — | — | — | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-2-P | SP-14V-1 | 0.85 | no route | ISC valve +14V feed | — | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | no route | ECU power +14V (main relay) | — | |
| W3 | SP-14V-1 | ELITE2500-A-26 | 0.85 | no route | ECU injector power input | — | |
| W4 | SP-14V-1 | ELITE2500-B-11 | 0.85 | no route | +13.8V ECU supply | — | |
| W5 | OEM-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-3-B | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | OEM-4-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | SP-GND-1 | ELITE2500-A-10 | 0.85 | no route | Battery ground | — | |
| W9 | SP-GND-1 | ELITE2500-A-11 | 0.85 | no route | Battery ground | — | |
| W10 | OEM-4-O | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W11 | SP-0V-1 | ELITE2500-B-14 | 0.5 | no route | Signal ground | — | |
| W12 | SP-0V-1 | ELITE2500-B-15 | 0.5 | no route | Signal ground | — | |
| W13 | SP-0V-1 | ELITE2500-B-16 | 0.5 | no route | Signal ground | — | |
| W14 | OEM-4-L | ELITE2500-A-9 | 0.5 | no route | +5V sensor supply | — | |
| W15 | OEM-3-Y | ELITE2500-B-1 | 0.5 | no route | Crank position (CKP) | — | |
| W16 | SP-0V-1 | ELITE2500-B-5 | 0.5 | no route | Crank (Trigger) (−) | — | |
| W17 | OEM-3-V | ELITE2500-B-2 | 0.5 | no route | Cam position (CMP) | — | |
| W18 | SP-0V-1 | ELITE2500-B-6 | 0.5 | no route | Cam (Home) (−) | — | |
| W19 | OEM-4-M | ELITE2500-B-21 | 0.5 | no route | Knock sensor | — | |
| W20 | OEM-3-F | ELITE2500-A-3 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W21 | OEM-3-I | ELITE2500-A-4 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W22 | OEM-2-A | ELITE2500-A-19 | 0.5 | no route | Injector 1 | — | |
| W23 | OEM-2-D | ELITE2500-A-20 | 0.5 | no route | Injector 2 | — | |
| W24 | OEM-2-G | ELITE2500-A-21 | 0.5 | no route | Injector 3 | — | |
| W25 | OEM-2-J | ELITE2500-A-22 | 0.5 | no route | Injector 4 | — | |
| W26 | OEM-4-X | ELITE2500-B-13 | 0.5 | no route | Mass air flow (MAF) | — | |
| W27 | OEM-4-V | ELITE2500-A-16 | 0.5 | no route | Throttle position (TPS) | — | |
| W28 | OEM-4-P | ELITE2500-B-4 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W29 | OEM-4-S | ELITE2500-A-13 | 0.5 | no route | Ignition switch (IG1) sense | — | |
| W30 | OEM-2-B | ELITE2500-A-25 | 0.5 | no route | Cooling fan relay | — | |
| W31 | OEM-2-C | ELITE2500-A-18 | 0.5 | no route | Condenser fan relay | — | |
| W32 | OEM-2-K | ELITE2500-A-1 | 0.5 | no route | A/C clutch relay | — | |
| W33 | OEM-2-M | ELITE2500-A-24 | 0.5 | no route | Fuel pump relay | — | |
| W34 | OEM-3-H | ELITE2500-A-23 | 0.5 | no route | Main relay | — | |
| W35 | OEM-2-O | ELITE2500-B-19 | 0.5 | no route | Fuel pump relay (non-immobiliser) | — | |
| W36 | OEM-4-D | ELITE2500-A-31 | 0.5 | no route | Boost control solenoid (turbo) | — | |
| W37 | OEM-4-E | ELITE2500-A-32 | 0.5 | no route | Boost control solenoid (turbo) | — | |
| W38 | OEM-3-J | ELITE2500-A-33 | 0.5 | no route | Front O2 heater | — | |
| W39 | OEM-3-P | ELITE2500-A-34 | 0.5 | no route | Rear O2 heater | — | |
| W40 | OEM-2-Q | ELITE2500-A-27 | 0.5 | no route | ISC valve low side | — | |
| W41 | OEM-2-E | ELITE2500-A-28 | 0.5 | no route | EGR valve | — | |
| W42 | OEM-2-F | ELITE2500-A-29 | 0.5 | no route | EGR valve | — | |
| W43 | OEM-2-H | ELITE2500-A-30 | 0.5 | no route | EGR valve | — | |
| W44 | OEM-4-AE | ELITE2500-A-17 | 0.5 | no route | BARO/MAP sensor (turbo boost pressure) | — | |
| W45 | OEM-4-AA | ELITE2500-A-2 | 0.5 | no route | Rear O2 signal | — | |
| W46 | OEM-4-W | ELITE2500-B-20 | 0.5 | no route | Front O2 signal | — | |
| W47 | OEM-4-R | ELITE2500-B-3 | 0.5 | no route | Intake air temperature 2 (IAT2, turbo) | — | |
| W48 | OEM-4-N | ELITE2500-B-12 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W49 | OEM-4-AD | ELITE2500-A-15 | 0.5 | no route | Fuel level | — | |
| W50 | OEM-3-T | ELITE2500-B-8 | 0.5 | no route | Vehicle speed | — | |
| W51 | OEM-3-S | ELITE2500-B-9 | 0.5 | no route | Immobiliser | — | |
| W52 | OEM-4-B | ELITE2500-B-10 | 0.5 | no route | Brake switch | — | |
| W53 | OEM-4-C | ELITE2500-B-7 | 0.5 | no route | Power steering pressure switch | — | |
| W54 | OEM-4-F | ELITE2500-A-14 | 0.5 | no route | A/C request | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (14)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | NET_FAMILY | OEM-4-F ↔ ELITE2500-A-14 | OEM-4-F "A/C request" [digital_in] is wired to ELITE2500-A-14 "AVI 10 (TPS)" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| info | NET_FAMILY | ELITE2500-B-16 ↔ ELITE2500-B-6 | ELITE2500-B-16 "Signal ground" [sensor_ground] is wired to ELITE2500-B-6 "Cam (Home) (−)" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | NET_FAMILY | OEM-2-E ↔ ELITE2500-A-28 | OEM-2-E "EGR valve" [low_side_out] is wired to ELITE2500-A-28 "INJ 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-F ↔ ELITE2500-A-29 | OEM-2-F "EGR valve" [low_side_out] is wired to ELITE2500-A-29 "INJ 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-H ↔ ELITE2500-A-30 | OEM-2-H "EGR valve" [low_side_out] is wired to ELITE2500-A-30 "INJ 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-Q ↔ ELITE2500-A-27 | OEM-2-Q "ISC valve low side" [low_side_out] is wired to ELITE2500-A-27 "INJ 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-3-J ↔ ELITE2500-A-33 | OEM-3-J "Front O2 heater" [low_side_out] is wired to ELITE2500-A-33 "Stepper 1 P3 / DPO" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-3-P ↔ ELITE2500-A-34 | OEM-3-P "Rear O2 heater" [low_side_out] is wired to ELITE2500-A-34 "Stepper 1 P4 / DPO" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-4-D ↔ ELITE2500-A-31 | OEM-4-D "Boost control solenoid (turbo)" [high_side_out] is wired to ELITE2500-A-31 "Stepper 1 P1 / DPO" [switch_out]. Configure this output as high side. |
| info | NET_FAMILY | OEM-4-E ↔ ELITE2500-A-32 | OEM-4-E "Boost control solenoid (turbo)" [high_side_out] is wired to ELITE2500-A-32 "Stepper 1 P2 / DPO" [switch_out]. Configure this output as high side. |
| info | NET_FAMILY | OEM-4-N ↔ ELITE2500-B-12 | OEM-4-N "Intake air temperature (IAT)" [temp_in] is wired to ELITE2500-B-12 "AVI 6 (O2 Input 1)" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-4-P ↔ ELITE2500-B-4 | OEM-4-P "Coolant temperature (ECT)" [temp_in] is wired to ELITE2500-B-4 "AVI 8 (Coolant Temp)" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-4-R ↔ ELITE2500-B-3 | OEM-4-R "Intake air temperature 2 (IAT2, turbo)" [temp_in] is wired to ELITE2500-B-3 "AVI 7 (Air Temp)" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | UNMAPPED | OEM | 17 optional OEM pins are not mapped: OEM-2-I EGR valve; OEM-2-N VTCS solenoid (intake butterflies); OEM-2-R Malfunction indicator lamp (MIL); OEM-3-C Purge solenoid valve; OEM-3-D EGR boost solenoid; OEM-3-K EVAP leak detection pump; OEM-3-M Alternator control; OEM-3-O Tachometer output; OEM-3-Q Data link connector (K-line); OEM-3-U Charge lamp; OEM-4-AC Data link connector (DLC TEN, turbo); OEM-4-AH EVAP leak detection pump solenoid valve; OEM-4-H Neutral switch; OEM-4-I Clutch switch; OEM-4-J VTCS vacuum switch; OEM-4-T Generator output voltage (terminal P); OEM-4-Z TCM (automatic only) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-4-AG | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-17. Review every wire against both manuals before building. Not wired: - OEM-4 AG: Constant +12V: Haltech Elite 2500 has no battery-constant input; not needed - OEM-2 I: EGR valve: no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Elite 2500 - OEM-2 N: VTCS solenoid (intake butterflies): no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Elite 2500 - OEM-2 R: Malfunction indicator lamp (MIL): no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Elite 2500 - OEM-3 C: Purge solenoid valve: no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Elite 2500 - OEM-3 K: EVAP leak detection pump: no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Elite 2500 - OEM-3 M: Alternator control: no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Elite 2500 - OEM-3 U: Charge lamp: no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Elite 2500 - OEM-4 AH: EVAP leak detection pump solenoid valve: no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Elite 2500 - OEM-3 O: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on Haltech Elite 2500 - OEM-4 H: Neutral switch: no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-4 I: Clutch switch: no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-4 J: VTCS vacuum switch: no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-3 Q: Data link connector (K-line): no free k_line on Haltech Elite 2500 - OEM-4 AC: Data link connector (DLC TEN, turbo): no free k_line on Haltech Elite 2500 - OEM-3 D: EGR boost solenoid: not classified in the library; wire by hand - OEM-4 T: Generator output voltage (terminal P): not classified in the library; wire by hand - OEM-4 Z: TCM (automatic only): not classified in the library; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | oem_manual | 2005 Mazda MX-5 Miata Engine Performance Control System (PCM terminal voltage reference, BP and BP WITH TC) | https://trull.org/alex/pubmirror/www.mellens.net/mazda/Mazda-Miata-2005/engine_control_system.pdf | — | — | — |
| 4 | vendor_doc | Adaptronic eSel039 Select Plugin ECU for Mazda MX5 / Miata NB8B/C (OEM ECU pinout) | https://www.miataturbo.net/attachments/ecus-tuning-54/04-msm-ecu-pinout-104032/nb8bc_oem_ecu_pinouts-224948d1602912806 | — | — | — |
| 4 | vendor_doc | Haltech Elite 2500 (HT-151300) spec sheet | https://joeblospeedshop.com/wp-content/uploads/2023/11/HT-151300_SPEC-SHEET-2500-ELITE.pdf | archive | 2026-10-05 | c97da78cb851 |
| 4 | vendor_doc | Haltech Elite 2500 — 26-pin connector pinout | https://support.haltech.com/portal/en/kb/articles/main-connector-26-pin-elite2500 | archive | 2026-10-05 | ea6fd4d27ac7 |
| 4 | vendor_doc | Haltech Elite 2500 — 34-pin main connector pinout | https://support.haltech.com/portal/en/kb/articles/main-connector-34-pin-elite2500 | archive | 2026-10-05 | 4e633dff8340 |
| 4 | vendor_doc | Link G4X MX5NB2X install manual (NB2 2001-05) | https://linkecu.com/documentation/MX5XNB2.pdf | archive | 2026-10-05 | 741efdd9f2c8 |