MX-5 Miata NB1 1999-00 (BP-4W) → Emtron KV8 (auto)
MX-5 Miata NB1 1999-00 (BP-4W) — Emtron — KV8
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-08
Before you start
| Status | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 60 wires · 10 connectors · 8 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Terminals | 3-1447221-4 |
| 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-1-B | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-3-M | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | KV8-D-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | KV8-D-2 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-14V-1 | KV8-D-20 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-3-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-3-B | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-3-C | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | KV8-B-34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | KV8-B-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | KV8-C-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | KV8-C-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-3-F | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | KV8-C-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | KV8-C-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-2-I | KV8-D-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-2-J | KV8-D-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | KV8-D-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-2-H | KV8-D-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | KV8-D-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-2-F | KV8-D-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-3-G | KV8-B-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-3-H | KV8-B-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-3-W | KV8-B-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-3-X | KV8-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-3-Y | KV8-B-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-3-Z | KV8-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-1-I | KV8-D-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-1-R | KV8-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-1-S | KV8-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-3-N | KV8-B-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-1-U | KV8-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-3-V | KV8-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-3-O | KV8-B-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-1-E | KV8-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-1-O | KV8-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-1-Q | KV8-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-2-M | KV8-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-2-N | KV8-B-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-2-O | KV8-B-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-2-P | KV8-B-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-3-L | KV8-B-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-3-Q | KV8-B-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-3-T | KV8-B-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-3-U | KV8-B-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-2-L | KV8-C-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-3-E | KV8-C-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-2-C | KV8-C-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-3-J | KV8-C-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-2-E | KV8-C-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-2-B | KV8-C-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-2-A | KV8-C-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-3-K | KV8-C-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-3-S | KV8-C-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-2-D | KV8-C-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-1-F | KV8-C-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-1-G | KV8-C-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-1-P | KV8-C-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-1-V | KV8-C-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-3-I | KV8-C-32 | 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 | KV8-D-1 | KV8-B-34 | open (OL) | +12 V supply must not touch power ground | |
| 2 | KV8-D-1 | KV8-C-17 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | KV8-D-21 | KV8-B-34 | open (OL) | 5 V sensor reference must not touch power ground | |
| 4 | KV8-D-21 | KV8-C-17 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 5 | KV8-D-1 | KV8-D-21 | open (OL) | +12 V supply must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
KV8-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | — | — | — | — | — | — | — |
| 2 | — | — | — | — | — | — | — | — | — |
| 3 | — | — | — | — | — | — | — | — | — |
| 4 | — | — | — | — | — | — | — | — | — |
| 5 | — | — | — | — | — | — | — | — | — |
| 6 | — | — | — | — | — | — | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | — | — | — | — | — | — | — | — | — |
| 10 | Lambda 1 heater − | — | W32 | — | 0.5 | OEM-1-U | — | — | — |
| 11 | Lambda 2 heater − | — | W33 | — | 0.5 | OEM-3-V | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | — | — | — | — | — | — | — | — | — |
| 16 | Lambda 1 heater + | — | — | — | — | — | — | — | — |
| 17 | Lambda 2 heater + | — | — | — | — | — | — | — | — |
| 18 | Lambda 1 Nernst cell (Vs) | — | — | — | — | — | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | Lambda 2 cal resistor | — | — | — | — | — | — | — | — |
| 21 | Lambda 2 Nernst cell (Vs) | — | — | — | — | — | — | — | — |
| 22 | Lambda 2 pump cell (Ip) | — | — | — | — | — | — | — | — |
| 23 | Lambda 2 virtual ground | — | — | — | — | — | — | — | — |
| 24 | Lambda 1 cal resistor | — | — | — | — | — | — | — | — |
| 25 | Lambda 1 pump cell (Ip) | — | — | — | — | — | — | — | — |
| 26 | Lambda 1 virtual ground | — | — | — | — | — | — | — | — |
KV8-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injection 1 | — | W24 | — | 0.5 | OEM-3-W | — | — | — |
| 2 | Injection 2 | — | W25 | — | 0.5 | OEM-3-X | — | — | — |
| 3 | Injection 3 | — | W26 | — | 0.5 | OEM-3-Y | — | — | — |
| 4 | Injection 4 | — | W27 | — | 0.5 | OEM-3-Z | — | — | — |
| 5 | Injection 5 | — | W39 | — | 0.5 | OEM-2-N | — | — | — |
| 6 | Injection 6 | — | W40 | — | 0.5 | OEM-2-O | — | — | — |
| 7 | Injection 7 | — | W41 | — | 0.5 | OEM-2-P | — | — | — |
| 8 | Injection 8 | — | W42 | — | 0.5 | OEM-3-L | — | — | — |
| 9 | ECU ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | Aux 1 | — | W35 | — | 0.5 | OEM-1-E | — | — | — |
| 11 | Aux 2 | — | W36 | — | 0.5 | OEM-1-O | — | — | — |
| 12 | Aux 3 | — | W37 | — | 0.5 | OEM-1-Q | — | — | — |
| 13 | Aux 4 | — | W38 | — | 0.5 | OEM-2-M | — | — | — |
| 14 | Aux 5 | — | W29 | — | 0.5 | OEM-1-R | — | — | — |
| 15 | Aux 6 | — | W30 | — | 0.5 | OEM-1-S | — | — | — |
| 16 | Aux 7 | — | W31 | — | 0.5 | OEM-3-N | — | — | — |
| 17 | Aux 8 | — | W34 | — | 0.5 | OEM-3-O | — | — | — |
| 18 | Aux 9 | — | W43 | — | 0.5 | OEM-3-Q | — | — | — |
| 19 | Aux 10 | — | W44 | — | 0.5 | OEM-3-T | — | — | — |
| 20 | Aux 11 | — | W45 | — | 0.5 | OEM-3-U | — | — | — |
| 21 | Aux 12 | — | — | — | — | — | — | — | — |
| 22 | Aux 13 | — | — | — | — | — | — | — | — |
| 23 | Aux 14 | — | — | — | — | — | — | — | — |
| 24 | Aux 15 | — | — | — | — | — | — | — | — |
| 25 | Aux 16 | — | — | — | — | — | — | — | — |
| 26 | Ignition 1 | — | W22 | — | 0.5 | OEM-3-G | — | — | — |
| 27 | Ignition 2 | — | W23 | — | 0.5 | OEM-3-H | — | — | — |
| 28 | Ignition 3 | — | — | — | — | — | — | — | — |
| 29 | Ignition 4 | — | — | — | — | — | — | — | — |
| 30 | Ignition 5 | — | — | — | — | — | — | — | — |
| 31 | Ignition 6 | — | — | — | — | — | — | — | — |
| 32 | Ignition 7 | — | — | — | — | — | — | — | — |
| 33 | Ignition 8 | — | — | — | — | — | — | — | — |
| 34 | ECU ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
KV8-C
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | Analog in 1 | — | W46 | — | 0.5 | OEM-2-L | — | — | — |
| 3 | Analog in 2 | — | W47 | — | 0.5 | OEM-3-E | — | — | — |
| 4 | Analog in 3 | — | W48 | — | 0.5 | OEM-2-C | — | — | — |
| 5 | Analog in 4 | — | W49 | — | 0.5 | OEM-3-J | — | — | — |
| 6 | Analog in 5 | — | W50 | — | 0.5 | OEM-2-E | — | — | — |
| 7 | Analog in 6 | — | W51 | — | 0.5 | OEM-2-B | — | — | — |
| 8 | Analog in 7 | — | W52 | — | 0.5 | OEM-2-A | — | — | — |
| 9 | Analog in 8 | — | W53 | — | 0.5 | OEM-3-K | — | — | — |
| 10 | Analog in 9 | — | W54 | — | 0.5 | OEM-3-S | — | — | — |
| 11 | Analog in 10 | — | — | — | — | — | — | — | — |
| 12 | Analog in 11 | — | — | — | — | — | — | — | — |
| 13 | Analog in 12 | — | — | — | — | — | — | — | — |
| 14 | Analog in 13 | — | — | — | — | — | — | — | — |
| 15 | Analog in 14 | — | — | — | — | — | — | — | — |
| 16 | Analog in 15 | — | — | — | — | — | — | — | — |
| 17 | Analog sensor 0V reference | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 18 | Digital in 9 | — | — | — | — | — | — | — | — |
| 19 | Digital in 10 | — | — | — | — | — | — | — | — |
| 20 | Digital in 11 | — | — | — | — | — | — | — | — |
| 21 | Digital in 12 | — | — | — | — | — | — | — | — |
| 22 | Digital in 13 | — | — | — | — | — | — | — | — |
| 23 | Digital in 14 | — | — | — | — | — | — | — | — |
| 24 | Analog in 16 | — | — | — | — | — | — | — | — |
| 25 | Analog sensor 0V reference | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 26 | ECU ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 27 | Digital in 1 | — | W55 | — | 0.5 | OEM-2-D | — | — | — |
| 28 | Digital in 2 | — | W56 | — | 0.5 | OEM-1-F | — | — | — |
| 29 | Digital in 3 | — | W57 | — | 0.5 | OEM-1-G | — | — | — |
| 30 | Digital in 4 | — | W58 | — | 0.5 | OEM-1-P | — | — | — |
| 31 | Digital in 5 | — | W59 | — | 0.5 | OEM-1-V | — | — | — |
| 32 | Digital in 6 | — | W60 | — | 0.5 | OEM-3-I | — | — | — |
| 33 | Digital in 7 | — | — | — | — | — | — | — | — |
| 34 | Digital in 8 | — | — | — | — | — | — | — | — |
KV8-D
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU 14V supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | Aux 13–16 14V supply | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Sensor supply 8V | — | — | — | — | — | — | — | — |
| 4 | Crank index sensor + | — | W17 | — | 0.5 | OEM-2-J | — | — | — |
| 5 | Crank index sensor − | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sync sensor + | — | W19 | — | 0.5 | OEM-2-H | — | — | — |
| 7 | Sync sensor − | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | CAN 1 H | — | — | — | — | — | — | — | — |
| 9 | EFI relay output (low side, 200 mA) | — | W28 | — | 0.5 | OEM-1-I | — | — | — |
| 10 | CAN 2 H | — | — | — | — | — | — | — | — |
| 11 | Knock 1 + | — | W21 | — | 0.5 | OEM-2-F | — | — | — |
| 12 | Knock 1 − | — | — | — | — | — | — | — | — |
| 13 | Shield (crank/cam/knock) | — | — | — | — | — | — | — | — |
| 14 | CAN 1 L | — | — | — | — | — | — | — | — |
| 15 | Ignition switch input | — | — | — | — | — | — | — | — |
| 16 | CAN 2 L | — | — | — | — | — | — | — | — |
| 17 | Knock 2 + | — | — | — | — | — | — | — | — |
| 18 | Knock 2 − | — | — | — | — | — | — | — | — |
| 19 | Analog output 0–5V | — | — | — | — | — | — | — | — |
| 20 | Aux 9–12 14V supply | — | W5 | — | 0.85 | SP-14V-1 | — | — | — |
| 21 | Sensor supply Vref1 5.0V | — | W16 | — | 0.5 | OEM-2-I | — | — | — |
| 22 | Sensor supply Vref2 5.0V | — | — | — | — | — | — | — | — |
| 23 | Ethernet Tx+ | — | — | — | — | — | — | — | — |
| 24 | Ethernet Tx− | — | — | — | — | — | — | — | — |
| 25 | Ethernet Rx+ | — | — | — | — | — | — | — | — |
| 26 | Ethernet Rx− | — | — | — | — | — | — | — | — |
OEM-1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Constant +12V | — | — | — | — | — | — | — | — |
| B | ECU power +14V (main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| E | Malfunction indicator lamp (MIL) | — | W35 | — | 0.5 | KV8-B-10 | — | — | — |
| F | Brake switch | — | W56 | — | 0.5 | KV8-C-28 | — | — | — |
| G | Power steering pressure switch | — | W57 | — | 0.5 | KV8-C-29 | — | — | — |
| I | Condenser fan relay | — | W28 | — | 0.5 | KV8-D-9 | — | — | — |
| O | Alternator control | — | W36 | — | 0.5 | KV8-B-11 | — | — | — |
| P | A/C request | — | W58 | — | 0.5 | KV8-C-30 | — | — | — |
| Q | Charge lamp | — | W37 | — | 0.5 | KV8-B-12 | — | — | — |
| R | Cooling fan relay | — | W29 | — | 0.5 | KV8-B-14 | — | — | — |
| S | A/C clutch relay | — | W30 | — | 0.5 | KV8-B-15 | — | — | — |
| U | Front O2 heater | — | W32 | — | 0.5 | KV8-A-10 | — | — | — |
| V | Neutral switch | — | W59 | — | 0.5 | KV8-C-31 | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Fuel tank pressure | — | W52 | — | 0.5 | KV8-C-8 | — | — | — |
| B | Intake air temperature (IAT) | — | W51 | — | 0.5 | KV8-C-7 | — | — | — |
| C | Front O2 signal | — | W48 | — | 0.5 | KV8-C-4 | — | — | — |
| D | Vehicle speed | — | W55 | — | 0.5 | KV8-C-27 | — | — | — |
| E | Coolant temperature (ECT) | — | W50 | — | 0.5 | KV8-C-6 | — | — | — |
| F | Knock sensor | — | W21 | — | 0.5 | KV8-D-11 | — | — | — |
| H | Cam position (CMP) | — | W19 | — | 0.5 | KV8-D-6 | — | — | — |
| I | +5V sensor supply | — | W16 | — | 0.5 | KV8-D-21 | — | — | — |
| J | Crank position (CKP) | — | W17 | — | 0.5 | KV8-D-4 | — | — | — |
| K | Tachometer output | — | — | — | — | — | — | — | — |
| L | Mass air flow (MAF) | — | W46 | — | 0.5 | KV8-C-2 | — | — | — |
| M | EGR valve | — | W38 | — | 0.5 | KV8-B-13 | — | — | — |
| N | EGR valve | — | W39 | — | 0.5 | KV8-B-5 | — | — | — |
| O | EGR valve | — | W40 | — | 0.5 | KV8-B-6 | — | — | — |
| P | EGR valve | — | W41 | — | 0.5 | KV8-B-7 | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| C | Power ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| E | Throttle position (TPS) | — | W47 | — | 0.5 | KV8-C-3 | — | — | — |
| F | Signal ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| G | Ignition 1 (coils 1+4, wasted spark) | — | W22 | — | 0.5 | KV8-B-26 | — | — | — |
| H | Ignition 2 (coils 2+3, wasted spark) | — | W23 | — | 0.5 | KV8-B-27 | — | — | — |
| I | Clutch switch | — | W60 | — | 0.5 | KV8-C-32 | — | — | — |
| J | Rear O2 signal | — | W49 | — | 0.5 | KV8-C-5 | — | — | — |
| K | Fuel level | — | W53 | — | 0.5 | KV8-C-9 | — | — | — |
| L | Evap purge solenoid | — | W42 | — | 0.5 | KV8-B-8 | — | — | — |
| M | ISC valve +14V feed | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| N | Fuel pump relay | — | W31 | — | 0.5 | KV8-B-16 | — | — | — |
| O | ISC valve low side | — | W34 | — | 0.5 | KV8-B-17 | — | — | — |
| Q | VICS solenoid (intake butterflies) | — | W43 | — | 0.5 | KV8-B-18 | — | — | — |
| S | EGR boost sensor | — | W54 | — | 0.5 | KV8-C-10 | — | — | — |
| T | EGR boost solenoid | — | W44 | — | 0.5 | KV8-B-19 | — | — | — |
| U | Canister drain cut valve (CDCV) | — | W45 | — | 0.5 | KV8-B-20 | — | — | — |
| V | Rear O2 heater | — | W33 | — | 0.5 | KV8-A-11 | — | — | — |
| W | Injector 1 | — | W24 | — | 0.5 | KV8-B-1 | — | — | — |
| X | Injector 2 | — | W25 | — | 0.5 | KV8-B-2 | — | — | — |
| Y | Injector 3 | — | W26 | — | 0.5 | KV8-B-3 | — | — | — |
| Z | Injector 4 | — | W27 | — | 0.5 | KV8-B-4 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-3-F | — | — | — |
| 1 | — | — | W14 | — | 0.5 | KV8-C-17 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | KV8-C-25 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | KV8-D-5 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | KV8-D-7 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-1-B | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-3-M | — | — | — |
| 1 | — | — | W3 | — | 0.85 | KV8-D-1 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | KV8-D-2 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | KV8-D-20 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W6 | — | 0.85 | OEM-3-A | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-3-B | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-3-C | — | — | — |
| 1 | — | — | W9 | — | 0.85 | KV8-B-34 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | KV8-B-9 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | KV8-C-1 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | KV8-C-26 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-1-A | Constant +12V | power_in | — | — | — | single_source | |
| OEM-1-B | ECU power +14V (main relay) | power_in | KV8-D-1 + KV8-D-2 + KV8-D-20 | ECU 14V supply + Aux 13–16 14V supply + Aux 9–12 14V supply | power_in | single_source | |
| OEM-1-E | Malfunction indicator lamp (MIL) | low_side_out | KV8-B-10 | Aux 1 | low_side_out | single_source | |
| OEM-1-F | Brake switch | digital_in | KV8-C-28 | Digital in 2 | digital_in | single_source | |
| OEM-1-G | Power steering pressure switch | digital_in | KV8-C-29 | Digital in 3 | digital_in | single_source | |
| OEM-1-I | Condenser fan relay | low_side_out | KV8-D-9 | EFI relay output (low side, 200 mA) | low_side_out | single_source | |
| OEM-1-O | Alternator control | low_side_out | KV8-B-11 | Aux 2 | low_side_out | single_source | |
| OEM-1-P | A/C request | digital_in | KV8-C-30 | Digital in 4 | digital_in | single_source | |
| OEM-1-Q | Charge lamp | low_side_out | KV8-B-12 | Aux 3 | low_side_out | single_source | |
| OEM-1-R | Cooling fan relay | low_side_out | KV8-B-14 | Aux 5 | low_side_out | single_source | |
| OEM-1-S | A/C clutch relay | low_side_out | KV8-B-15 | Aux 6 | low_side_out | single_source | |
| OEM-1-U | Front O2 heater | low_side_out | KV8-A-10 | Lambda 1 heater − | low_side_out | single_source | |
| OEM-1-V | Neutral switch | digital_in | KV8-C-31 | Digital in 5 | digital_in | single_source | |
| OEM-2-A | Fuel tank pressure | analog_in | KV8-C-8 | Analog in 7 | analog_in | single_source | |
| OEM-2-B | Intake air temperature (IAT) | temp_in | KV8-C-7 | Analog in 6 | analog_in | single_source | |
| OEM-2-C | Front O2 signal | lambda_nb_in | KV8-C-4 | Analog in 3 | analog_in | single_source | |
| OEM-2-D | Vehicle speed | digital_in | KV8-C-27 | Digital in 1 | digital_in | single_source | |
| OEM-2-E | Coolant temperature (ECT) | temp_in | KV8-C-6 | Analog in 5 | analog_in | single_source | |
| OEM-2-F | Knock sensor | knock_in | KV8-D-11 | Knock 1 + | knock_in | single_source | |
| OEM-2-H | Cam position (CMP) | trigger_in | KV8-D-6 | Sync sensor + | trigger_in | single_source | |
| OEM-2-I | +5V sensor supply | vref | KV8-D-21 | Sensor supply Vref1 5.0V | vref | single_source | |
| OEM-2-J | Crank position (CKP) | trigger_in | KV8-D-4 | Crank index sensor + | trigger_in | single_source | |
| OEM-2-K | Tachometer output | tacho_out | — | — | — | single_source | |
| OEM-2-L | Mass air flow (MAF) | analog_in | KV8-C-2 | Analog in 1 | analog_in | single_source | |
| OEM-2-M | EGR valve | low_side_out | KV8-B-13 | Aux 4 | low_side_out | single_source | |
| OEM-2-N | EGR valve | low_side_out | KV8-B-5 | Injection 5 | injector_out | single_source | |
| OEM-2-O | EGR valve | low_side_out | KV8-B-6 | Injection 6 | injector_out | single_source | |
| OEM-2-P | EGR valve | low_side_out | KV8-B-7 | Injection 7 | injector_out | single_source | |
| OEM-3-A | Power ground | ground | KV8-B-34 + KV8-B-9 + KV8-C-1 + KV8-C-26 | ECU ground + ECU ground + ECU ground + ECU ground | ground | single_source | |
| OEM-3-B | Power ground | ground | KV8-B-34 + KV8-B-9 + KV8-C-1 + KV8-C-26 | ECU ground + ECU ground + ECU ground + ECU ground | ground | single_source | |
| OEM-3-C | Power ground | ground | KV8-B-34 + KV8-B-9 + KV8-C-1 + KV8-C-26 | ECU ground + ECU ground + ECU ground + ECU ground | ground | single_source | |
| OEM-3-E | Throttle position (TPS) | analog_in | KV8-C-3 | Analog in 2 | analog_in | single_source | |
| OEM-3-F | Signal ground | sensor_ground | KV8-C-17 + KV8-C-25 + KV8-D-5 + KV8-D-7 | Analog sensor 0V reference + Analog sensor 0V reference + Crank index sensor − + Sync sensor − | sensor_ground + trigger_in | single_source | |
| OEM-3-G | Ignition 1 (coils 1+4, wasted spark) | ignition_out | KV8-B-26 | Ignition 1 | ignition_out | single_source | |
| OEM-3-H | Ignition 2 (coils 2+3, wasted spark) | ignition_out | KV8-B-27 | Ignition 2 | ignition_out | single_source | |
| OEM-3-I | Clutch switch | digital_in | KV8-C-32 | Digital in 6 | digital_in | single_source | |
| OEM-3-J | Rear O2 signal | lambda_nb_in | KV8-C-5 | Analog in 4 | analog_in | single_source | |
| OEM-3-K | Fuel level | analog_in | KV8-C-9 | Analog in 8 | analog_in | single_source | |
| OEM-3-L | Evap purge solenoid | low_side_out | KV8-B-8 | Injection 8 | injector_out | single_source | |
| OEM-3-M | ISC valve +14V feed | power_in | KV8-D-1 + KV8-D-2 + KV8-D-20 | ECU 14V supply + Aux 13–16 14V supply + Aux 9–12 14V supply | power_in | single_source | |
| OEM-3-N | Fuel pump relay | low_side_out | KV8-B-16 | Aux 7 | low_side_out | single_source | |
| OEM-3-O | ISC valve low side | low_side_out | KV8-B-17 | Aux 8 | low_side_out | single_source | |
| OEM-3-Q | VICS solenoid (intake butterflies) | low_side_out | KV8-B-18 | Aux 9 | hbridge_out | single_source | |
| OEM-3-S | EGR boost sensor | analog_in | KV8-C-10 | Analog in 9 | analog_in | single_source | |
| OEM-3-T | EGR boost solenoid | low_side_out | KV8-B-19 | Aux 10 | hbridge_out | single_source | |
| OEM-3-U | Canister drain cut valve (CDCV) | low_side_out | KV8-B-20 | Aux 11 | hbridge_out | single_source | |
| OEM-3-V | Rear O2 heater | low_side_out | KV8-A-11 | Lambda 2 heater − | low_side_out | single_source | |
| OEM-3-W | Injector 1 | injector_out | KV8-B-1 | Injection 1 | injector_out | single_source | |
| OEM-3-X | Injector 2 | injector_out | KV8-B-2 | Injection 2 | injector_out | single_source | |
| OEM-3-Y | Injector 3 | injector_out | KV8-B-3 | Injection 3 | injector_out | single_source | |
| OEM-3-Z | Injector 4 | injector_out | KV8-B-4 | Injection 4 | injector_out | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-1-B | SP-14V-1 | 0.85 | no route | ECU power +14V (main relay) | — | |
| W2 | OEM-3-M | SP-14V-1 | 0.85 | no route | ISC valve +14V feed | — | |
| W3 | SP-14V-1 | KV8-D-1 | 0.85 | no route | ECU 14V supply | — | |
| W4 | SP-14V-1 | KV8-D-2 | 0.85 | no route | Aux 13–16 14V supply | — | |
| W5 | SP-14V-1 | KV8-D-20 | 0.85 | no route | Aux 9–12 14V supply | — | |
| W6 | OEM-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | OEM-3-B | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | OEM-3-C | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W9 | SP-GND-1 | KV8-B-34 | 0.85 | no route | ECU ground | — | |
| W10 | SP-GND-1 | KV8-B-9 | 0.85 | no route | ECU ground | — | |
| W11 | SP-GND-1 | KV8-C-1 | 0.85 | no route | ECU ground | — | |
| W12 | SP-GND-1 | KV8-C-26 | 0.85 | no route | ECU ground | — | |
| W13 | OEM-3-F | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W14 | SP-0V-1 | KV8-C-17 | 0.5 | no route | Analog sensor 0V reference | — | |
| W15 | SP-0V-1 | KV8-C-25 | 0.5 | no route | Analog sensor 0V reference | — | |
| W16 | OEM-2-I | KV8-D-21 | 0.5 | no route | +5V sensor supply | — | |
| W17 | OEM-2-J | KV8-D-4 | 0.5 | no route | Crank position (CKP) | — | |
| W18 | SP-0V-1 | KV8-D-5 | 0.5 | no route | Crank index sensor − | — | |
| W19 | OEM-2-H | KV8-D-6 | 0.5 | no route | Cam position (CMP) | — | |
| W20 | SP-0V-1 | KV8-D-7 | 0.5 | no route | Sync sensor − | — | |
| W21 | OEM-2-F | KV8-D-11 | 0.5 | no route | Knock sensor | — | |
| W22 | OEM-3-G | KV8-B-26 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W23 | OEM-3-H | KV8-B-27 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W24 | OEM-3-W | KV8-B-1 | 0.5 | no route | Injector 1 | — | |
| W25 | OEM-3-X | KV8-B-2 | 0.5 | no route | Injector 2 | — | |
| W26 | OEM-3-Y | KV8-B-3 | 0.5 | no route | Injector 3 | — | |
| W27 | OEM-3-Z | KV8-B-4 | 0.5 | no route | Injector 4 | — | |
| W28 | OEM-1-I | KV8-D-9 | 0.5 | no route | Condenser fan relay | — | |
| W29 | OEM-1-R | KV8-B-14 | 0.5 | no route | Cooling fan relay | — | |
| W30 | OEM-1-S | KV8-B-15 | 0.5 | no route | A/C clutch relay | — | |
| W31 | OEM-3-N | KV8-B-16 | 0.5 | no route | Fuel pump relay | — | |
| W32 | OEM-1-U | KV8-A-10 | 0.5 | no route | Front O2 heater | — | |
| W33 | OEM-3-V | KV8-A-11 | 0.5 | no route | Rear O2 heater | — | |
| W34 | OEM-3-O | KV8-B-17 | 0.5 | no route | ISC valve low side | — | |
| W35 | OEM-1-E | KV8-B-10 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W36 | OEM-1-O | KV8-B-11 | 0.5 | no route | Alternator control | — | |
| W37 | OEM-1-Q | KV8-B-12 | 0.5 | no route | Charge lamp | — | |
| W38 | OEM-2-M | KV8-B-13 | 0.5 | no route | EGR valve | — | |
| W39 | OEM-2-N | KV8-B-5 | 0.5 | no route | EGR valve | — | |
| W40 | OEM-2-O | KV8-B-6 | 0.5 | no route | EGR valve | — | |
| W41 | OEM-2-P | KV8-B-7 | 0.5 | no route | EGR valve | — | |
| W42 | OEM-3-L | KV8-B-8 | 0.5 | no route | Evap purge solenoid | — | |
| W43 | OEM-3-Q | KV8-B-18 | 0.5 | no route | VICS solenoid (intake butterflies) | — | |
| W44 | OEM-3-T | KV8-B-19 | 0.5 | no route | EGR boost solenoid | — | |
| W45 | OEM-3-U | KV8-B-20 | 0.5 | no route | Canister drain cut valve (CDCV) | — | |
| W46 | OEM-2-L | KV8-C-2 | 0.5 | no route | Mass air flow (MAF) | — | |
| W47 | OEM-3-E | KV8-C-3 | 0.5 | no route | Throttle position (TPS) | — | |
| W48 | OEM-2-C | KV8-C-4 | 0.5 | no route | Front O2 signal | — | |
| W49 | OEM-3-J | KV8-C-5 | 0.5 | no route | Rear O2 signal | — | |
| W50 | OEM-2-E | KV8-C-6 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W51 | OEM-2-B | KV8-C-7 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W52 | OEM-2-A | KV8-C-8 | 0.5 | no route | Fuel tank pressure | — | |
| W53 | OEM-3-K | KV8-C-9 | 0.5 | no route | Fuel level | — | |
| W54 | OEM-3-S | KV8-C-10 | 0.5 | no route | EGR boost sensor | — | |
| W55 | OEM-2-D | KV8-C-27 | 0.5 | no route | Vehicle speed | — | |
| W56 | OEM-1-F | KV8-C-28 | 0.5 | no route | Brake switch | — | |
| W57 | OEM-1-G | KV8-C-29 | 0.5 | no route | Power steering pressure switch | — | |
| W58 | OEM-1-P | KV8-C-30 | 0.5 | no route | A/C request | — | |
| W59 | OEM-1-V | KV8-C-31 | 0.5 | no route | Neutral switch | — | |
| W60 | OEM-3-I | KV8-C-32 | 0.5 | no route | Clutch switch | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 174514-6 | TE | AMP Multilock .040/.070 hybrid 16-pin female harness plug (Miata NB1 ECU) | 1.000 | ea |
| connector | 174515-6 | TE | AMP Multilock .040/.070 hybrid 22-pin female harness plug (Miata NA/NB ECU) | 1.000 | ea |
| connector | 174516-6 | TE | AMP Multilock .040/.070 hybrid 26-pin female harness plug (Miata NA/NB ECU) | 1.000 | ea |
| connector | 3-1437290-7 | TE | Superseal 1.0 26-way plug | 1.000 | ea |
| connector | 3-1437290-8 | TE | Superseal 1.0 26-way plug, Key 2 | 1.000 | ea |
| connector | 4-1437290-0 | TE | Superseal 1.0 34-way plug, Key 1 | 1.000 | ea |
| connector | 4-1437290-1 | TE | Superseal 1.0 34-way plug, Key 2 | 1.000 | ea |
| terminal | 3-1447221-4 | TE | Superseal 1.0 socket terminal, 20 AWG (0.5 sq mm) | 54.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (12)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | DATASET_GAP | KV8 A | 14 of 26 cavities on KV8 A have no pin data (1,2,3,4,5,6,7,8,9,12,13,14,15,19). Anything there is invisible to these checks. |
| warn | NET_FAMILY | OEM-3-Q ↔ KV8-B-18 | OEM-3-Q "VICS solenoid (intake butterflies)" [low_side_out] is wired to KV8-B-18 "Aux 9" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-T ↔ KV8-B-19 | OEM-3-T "EGR boost solenoid" [low_side_out] is wired to KV8-B-19 "Aux 10" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-U ↔ KV8-B-20 | OEM-3-U "Canister drain cut valve (CDCV)" [low_side_out] is wired to KV8-B-20 "Aux 11" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| info | NET_FAMILY | KV8-C-17 ↔ KV8-D-5 | KV8-C-17 "Analog sensor 0V reference" [sensor_ground] is wired to KV8-D-5 "Crank index sensor −" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | NET_FAMILY | OEM-2-B ↔ KV8-C-7 | OEM-2-B "Intake air temperature (IAT)" [temp_in] is wired to KV8-C-7 "Analog in 6" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-2-E ↔ KV8-C-6 | OEM-2-E "Coolant temperature (ECT)" [temp_in] is wired to KV8-C-6 "Analog in 5" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-2-N ↔ KV8-B-5 | OEM-2-N "EGR valve" [low_side_out] is wired to KV8-B-5 "Injection 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-O ↔ KV8-B-6 | OEM-2-O "EGR valve" [low_side_out] is wired to KV8-B-6 "Injection 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-P ↔ KV8-B-7 | OEM-2-P "EGR valve" [low_side_out] is wired to KV8-B-7 "Injection 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-3-L ↔ KV8-B-8 | OEM-3-L "Evap purge solenoid" [low_side_out] is wired to KV8-B-8 "Injection 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | UNMAPPED | OEM | 1 optional OEM pins are not mapped: OEM-2-K Tachometer output |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-1-A | 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 2026-10-06. Review every wire against both manuals before building. Not wired: - OEM-1 A: Constant +12V: Emtron KV8 has no battery-constant input; not needed - KV8-D 12: Knock 1 − left open: the stock knock sensor has one ECU wire; check the ECU manual for single-wire knock sensors - OEM-2 K: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on Emtron KV8 - KV8-D 15: Ignition switch input: not fed (the stock ECU has no ignition-sense pin); feed it from a switched-ignition source
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Link G4X MX5NB1X install manual (NB1 1999-00) | https://linkecu.com/documentation/MX5XNB1.pdf | archive | 2026-10-05 | 2e36c91270cc |
| 2 | user_dataset | Subaru ECU Matcher dataset (hiubin), vehicleId=1 | — | — | — | — |