Mazda RX-7 FD 1992-2002 (13B-REW twin-turbo) → Link G4X StormX 108-4000 (auto)
Mazda RX-7 FD 1992-2002 (13B-REW twin-turbo) — Link — G4X StormX
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-11
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 | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 51 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-D-4A | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-D-4E | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | G4XSTORMX-A-A5 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-A-1AF | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-1AJ | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-1L | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | G4XSTORMX-A-A25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | G4XSTORMX-A-A34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | G4XSTORMX-B-B25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | G4XSTORMX-B-B34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-A-1AB | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-A-1X | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-C-3AB | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-C-3S | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | G4XSTORMX-A-A24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | G4XSTORMX-B-B22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-C-3A | G4XSTORMX-A-A32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-C-3R | G4XSTORMX-A-A8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-C-3U | G4XSTORMX-A-A9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-C-3O | G4XSTORMX-B-B9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-D-4AF | G4XSTORMX-A-A13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-D-4AJ | G4XSTORMX-A-A12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-D-4AN | G4XSTORMX-A-A11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-1Q | G4XSTORMX-A-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-1U | G4XSTORMX-A-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-1Y | G4XSTORMX-A-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-1AC | G4XSTORMX-A-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-1H | G4XSTORMX-A-A21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-D-4D | G4XSTORMX-A-A20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-D-4F | G4XSTORMX-A-A19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-D-4G | G4XSTORMX-A-A18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-D-4I | G4XSTORMX-A-A29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-D-4K | G4XSTORMX-A-A28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-D-4L | G4XSTORMX-A-A27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-1C | G4XSTORMX-A-A26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A-1E | G4XSTORMX-B-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-A-1G | G4XSTORMX-B-B3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-A-1I | G4XSTORMX-B-B2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-1K | G4XSTORMX-B-B1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-D-4AH | G4XSTORMX-A-A17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-C-3I | G4XSTORMX-A-A22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-C-3D | G4XSTORMX-A-A33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-C-3W | G4XSTORMX-A-A15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-C-3T | G4XSTORMX-A-A16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-C-3V | G4XSTORMX-B-B6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-C-3H | G4XSTORMX-A-A14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-D-4Q | G4XSTORMX-A-A30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-D-4AA | G4XSTORMX-A-A31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-D-4S | G4XSTORMX-A-A23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-D-4V | G4XSTORMX-B-B21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-D-4W | G4XSTORMX-B-B20 | 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 | G4XSTORMX-A-A24 | G4XSTORMX-A-A32 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 2 | G4XSTORMX-A-A24 | G4XSTORMX-A-A5 | open (OL) | sensor ground must not touch +12 V supply | |
| 3 | G4XSTORMX-A-A25 | G4XSTORMX-A-A32 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | G4XSTORMX-A-A25 | G4XSTORMX-A-A5 | open (OL) | power ground must not touch +12 V supply | |
| 5 | G4XSTORMX-A-A32 | G4XSTORMX-A-A5 | open (OL) | 5 V sensor reference must not touch +12 V supply |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
G4XSTORMX-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | Injector 4 | — | W27 | — | 0.5 | OEM-A-1AC | — | — | — |
| A10 | Ignition 4 | — | — | — | — | — | — | — | — |
| A11 | Ignition 3 | — | W23 | — | 0.5 | OEM-D-4AN | — | — | — |
| A12 | Ignition 2 | — | W22 | — | 0.5 | OEM-D-4AJ | — | — | — |
| A13 | Ignition 1 | — | W21 | — | 0.5 | OEM-D-4AF | — | — | — |
| A14 | Analog Volt 4 | — | W46 | — | 0.5 | OEM-C-3H | — | — | — |
| A15 | Analog Temp 1 | — | W43 | — | 0.5 | OEM-C-3W | — | — | — |
| A16 | Analog Temp 2 | — | W44 | — | 0.5 | OEM-C-3T | — | — | — |
| A17 | Analog Volt 1 | — | W40 | — | 0.5 | OEM-D-4AH | — | — | — |
| A18 | Aux 4 | — | W31 | — | 0.5 | OEM-D-4G | — | — | — |
| A19 | Aux 3 | — | W30 | — | 0.5 | OEM-D-4F | — | — | — |
| A2 | Injector 3 | — | W26 | — | 0.5 | OEM-A-1Y | — | — | — |
| A20 | Aux 2 | — | W29 | — | 0.5 | OEM-D-4D | — | — | — |
| A21 | Aux 1 | — | W28 | — | 0.5 | OEM-A-1H | — | — | — |
| A22 | Analog Volt 2 | — | W41 | — | 0.5 | OEM-C-3I | — | — | — |
| A23 | Digital Input 3 | — | W49 | — | 0.5 | OEM-D-4S | — | — | — |
| A24 | Sensor Ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| A25 | System Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| A26 | Aux 8 | — | W35 | — | 0.5 | OEM-A-1C | — | — | — |
| A27 | Aux 7 | — | W34 | — | 0.5 | OEM-D-4L | — | — | — |
| A28 | Aux 6 | — | W33 | — | 0.5 | OEM-D-4K | — | — | — |
| A29 | Aux 5 | — | W32 | — | 0.5 | OEM-D-4I | — | — | — |
| A3 | Injector 2 | — | W25 | — | 0.5 | OEM-A-1U | — | — | — |
| A30 | Digital Input 1 | — | W47 | — | 0.5 | OEM-D-4Q | — | — | — |
| A31 | Digital Input 2 | — | W48 | — | 0.5 | OEM-D-4AA | — | — | — |
| A32 | +5V Out | — | W17 | — | 0.5 | OEM-C-3A | — | — | — |
| A33 | Analog Volt 3 | — | W42 | — | 0.5 | OEM-C-3D | — | — | — |
| A34 | System Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| A4 | Injector 1 | — | W24 | — | 0.5 | OEM-A-1Q | — | — | — |
| A5 | +14V ECU Power | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| A6 | +8V Out | — | — | — | — | — | — | — | — |
| A7 | Shield Ground | — | — | — | — | — | — | — | — |
| A8 | Trigger 1 | — | W18 | — | 0.5 | OEM-C-3R | — | — | — |
| A9 | Trigger 2 | — | W19 | — | 0.5 | OEM-C-3U | — | — | — |
G4XSTORMX-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| B1 | Injector 8 | — | W39 | — | 0.5 | OEM-A-1K | — | — | — |
| B10 | Ignition 8 | — | — | — | — | — | — | — | — |
| B11 | Ignition 7 | — | — | — | — | — | — | — | — |
| B12 | Ignition 6 | — | — | — | — | — | — | — | — |
| B13 | Ignition 5 | — | — | — | — | — | — | — | — |
| B15 | Analog Volt 6 | — | — | — | — | — | — | — | — |
| B16 | Analog Volt 7 | — | — | — | — | — | — | — | — |
| B17 | Shield Ground | — | — | — | — | — | — | — | — |
| B19 | Digital Input 6 | — | — | — | — | — | — | — | — |
| B2 | Injector 7 | — | W38 | — | 0.5 | OEM-A-1I | — | — | — |
| B20 | Digital Input 5 | — | W51 | — | 0.5 | OEM-D-4W | — | — | — |
| B21 | Digital Input 4 | — | W50 | — | 0.5 | OEM-D-4V | — | — | — |
| B22 | Sensor Ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| B23 | Analog Volt 8 | — | — | — | — | — | — | — | — |
| B25 | System Ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| B27 | CAN 2 H | — | — | — | — | — | — | — | — |
| B28 | CAN 2 L | — | — | — | — | — | — | — | — |
| B29 | Digital Input 8 | — | — | — | — | — | — | — | — |
| B3 | Injector 6 | — | W37 | — | 0.5 | OEM-A-1G | — | — | — |
| B30 | Digital Input 7 | — | — | — | — | — | — | — | — |
| B33 | Analog Volt 5 | — | — | — | — | — | — | — | — |
| B34 | System Ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| B4 | Injector 5 | — | W36 | — | 0.5 | OEM-A-1E | — | — | — |
| B6 | Analog Temp 3 | — | W45 | — | 0.5 | OEM-C-3V | — | — | — |
| B8 | Knock 2 | — | — | — | — | — | — | — | — |
| B9 | Knock 1 | — | W20 | — | 0.5 | OEM-C-3O | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1AA | OMP stepper phase B1 | — | — | — | — | — | — | — | — |
| 1AB | Sensor ground | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 1AC | Injector 4 (rear secondary) | — | W27 | — | 0.5 | G4XSTORMX-A-A1 | — | — | — |
| 1AE | OMP stepper phase A1 | — | — | — | — | — | — | — | — |
| 1AF | Power ground | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 1AJ | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 1C | Idle speed control (ISC) solenoid | — | W35 | — | 0.5 | G4XSTORMX-A-A26 | — | — | — |
| 1E | Turbo charge control solenoid | — | W36 | — | 0.5 | G4XSTORMX-B-B4 | — | — | — |
| 1G | Purge solenoid | — | W37 | — | 0.5 | G4XSTORMX-B-B3 | — | — | — |
| 1H | Cooling fan relay (low speed) | — | W28 | — | 0.5 | G4XSTORMX-A-A21 | — | — | — |
| 1I | Turbo charge relief solenoid | — | W38 | — | 0.5 | G4XSTORMX-B-B2 | — | — | — |
| 1K | Turbo pre-control solenoid | — | W39 | — | 0.5 | G4XSTORMX-B-B1 | — | — | — |
| 1L | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 1M | Turbo control solenoid | — | — | — | — | — | — | — | — |
| 1O | Boost control solenoid | — | — | — | — | — | — | — | — |
| 1Q | Injector 1 (front primary) | — | W24 | — | 0.5 | G4XSTORMX-A-A4 | — | — | — |
| 1S | OMP stepper phase B2 | — | — | — | — | — | — | — | — |
| 1U | Injector 2 (rear primary) | — | W25 | — | 0.5 | G4XSTORMX-A-A3 | — | — | — |
| 1W | OMP stepper phase A2 | — | — | — | — | — | — | — | — |
| 1X | Sensor ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 1Y | Injector 3 (front secondary) | — | W26 | — | 0.5 | G4XSTORMX-A-A2 | — | — | — |
OEM-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 3A | +5V sensor supply | — | W17 | — | 0.5 | G4XSTORMX-A-A32 | — | — | — |
| 3AB | Sensor ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 3D | O2 sensor (narrowband) | — | W42 | — | 0.5 | G4XSTORMX-A-A33 | — | — | — |
| 3G | Fuel pressure regulator control (PRC) solenoid | — | — | — | — | — | — | — | — |
| 3H | OMP position sensor | — | W46 | — | 0.5 | G4XSTORMX-A-A14 | — | — | — |
| 3I | Throttle position (TPS, full range) | — | W41 | — | 0.5 | G4XSTORMX-A-A22 | — | — | — |
| 3O | Knock sensor | — | W20 | — | 0.5 | G4XSTORMX-B-B9 | — | — | — |
| 3R | Crank position (CAS NE) | — | W18 | — | 0.5 | G4XSTORMX-A-A8 | — | — | — |
| 3S | Sensor ground (CAS) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 3T | Intake air temperature (IAT) | — | W44 | — | 0.5 | G4XSTORMX-A-A16 | — | — | — |
| 3U | Home position (CAS G) | — | W19 | — | 0.5 | G4XSTORMX-A-A9 | — | — | — |
| 3V | Fuel temperature | — | W45 | — | 0.5 | G4XSTORMX-B-B6 | — | — | — |
| 3W | Coolant temperature (ECT) | — | W43 | — | 0.5 | G4XSTORMX-A-A15 | — | — | — |
OEM-D
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 4A | ECU main power (+12V via main relay/ECR) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 4AA | Brake pedal switch | — | W48 | — | 0.5 | G4XSTORMX-A-A31 | — | — | — |
| 4AF | Ignition front trailing | — | W21 | — | 0.5 | G4XSTORMX-A-A13 | — | — | — |
| 4AH | MAP sensor (PIM) | — | W40 | — | 0.5 | G4XSTORMX-A-A17 | — | — | — |
| 4AJ | Ignition rear trailing | — | W22 | — | 0.5 | G4XSTORMX-A-A12 | — | — | — |
| 4AN | Ignition leading (wasted spark) | — | W23 | — | 0.5 | G4XSTORMX-A-A11 | — | — | — |
| 4B | Battery constant (+12V) | — | — | — | — | — | — | — | — |
| 4C | Ignition switch / start signal | — | — | — | — | — | — | — | — |
| 4D | Air pump clutch relay | — | W29 | — | 0.5 | G4XSTORMX-A-A20 | — | — | — |
| 4E | ECU main power (+12V via main relay/ECR) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4F | Fuel pump speed relay | — | W30 | — | 0.5 | G4XSTORMX-A-A19 | — | — | — |
| 4G | Fuel pump relay | — | W31 | — | 0.5 | G4XSTORMX-A-A18 | — | — | — |
| 4I | A/C relay | — | W32 | — | 0.5 | G4XSTORMX-A-A29 | — | — | — |
| 4K | Cooling fan relay (low speed) | — | W33 | — | 0.5 | G4XSTORMX-A-A28 | — | — | — |
| 4L | Cooling fan relay (high speed) | — | W34 | — | 0.5 | G4XSTORMX-A-A27 | — | — | — |
| 4M | Tachometer output | — | — | — | — | — | — | — | — |
| 4Q | Vehicle speed sensor | — | W47 | — | 0.5 | G4XSTORMX-A-A30 | — | — | — |
| 4S | Clutch switch | — | W49 | — | 0.5 | G4XSTORMX-A-A23 | — | — | — |
| 4V | A/C request | — | W50 | — | 0.5 | G4XSTORMX-B-B21 | — | — | — |
| 4W | Power steering pressure switch | — | W51 | — | 0.5 | G4XSTORMX-B-B20 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W11 | — | 0.5 | OEM-A-1AB | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-A-1X | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-C-3AB | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-C-3S | — | — | — |
| 1 | — | — | W15 | — | 0.5 | G4XSTORMX-A-A24 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | G4XSTORMX-B-B22 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-D-4A | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-D-4E | — | — | — |
| 1 | — | — | W3 | — | 0.85 | G4XSTORMX-A-A5 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-A-1AF | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-A-1AJ | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A-1L | — | — | — |
| 1 | — | — | W7 | — | 0.85 | G4XSTORMX-A-A25 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | G4XSTORMX-A-A34 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | G4XSTORMX-B-B25 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | G4XSTORMX-B-B34 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1AA | OMP stepper phase B1 | hbridge_out | — | — | — | single_source | |
| OEM-A-1AB | Sensor ground | sensor_ground | G4XSTORMX-A-A24 + G4XSTORMX-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-A-1AC | Injector 4 (rear secondary) | injector_out | G4XSTORMX-A-A1 | Injector 4 | injector_out | single_source | |
| OEM-A-1AE | OMP stepper phase A1 | hbridge_out | — | — | — | single_source | |
| OEM-A-1AF | Power ground | ground | G4XSTORMX-A-A25 + G4XSTORMX-A-A34 + G4XSTORMX-B-B25 + G4XSTORMX-B-B34 | System Ground + System Ground + System Ground + System Ground | ground | single_source | |
| OEM-A-1AJ | Power ground | ground | G4XSTORMX-A-A25 + G4XSTORMX-A-A34 + G4XSTORMX-B-B25 + G4XSTORMX-B-B34 | System Ground + System Ground + System Ground + System Ground | ground | single_source | |
| OEM-A-1C | Idle speed control (ISC) solenoid | low_side_out | G4XSTORMX-A-A26 | Aux 8 | switch_out | single_source | |
| OEM-A-1E | Turbo charge control solenoid | low_side_out | G4XSTORMX-B-B4 | Injector 5 | injector_out | single_source | |
| OEM-A-1G | Purge solenoid | low_side_out | G4XSTORMX-B-B3 | Injector 6 | injector_out | single_source | |
| OEM-A-1H | Cooling fan relay (low speed) | low_side_out | G4XSTORMX-A-A21 | Aux 1 | low_side_out | single_source | |
| OEM-A-1I | Turbo charge relief solenoid | low_side_out | G4XSTORMX-B-B2 | Injector 7 | injector_out | single_source | |
| OEM-A-1K | Turbo pre-control solenoid | low_side_out | G4XSTORMX-B-B1 | Injector 8 | injector_out | single_source | |
| OEM-A-1L | Power ground | ground | G4XSTORMX-A-A25 + G4XSTORMX-A-A34 + G4XSTORMX-B-B25 + G4XSTORMX-B-B34 | System Ground + System Ground + System Ground + System Ground | ground | single_source | |
| OEM-A-1M | Turbo control solenoid | low_side_out | — | — | — | single_source | |
| OEM-A-1O | Boost control solenoid | low_side_out | — | — | — | single_source | |
| OEM-A-1Q | Injector 1 (front primary) | injector_out | G4XSTORMX-A-A4 | Injector 1 | injector_out | single_source | |
| OEM-A-1S | OMP stepper phase B2 | hbridge_out | — | — | — | single_source | |
| OEM-A-1U | Injector 2 (rear primary) | injector_out | G4XSTORMX-A-A3 | Injector 2 | injector_out | single_source | |
| OEM-A-1W | OMP stepper phase A2 | hbridge_out | — | — | — | single_source | |
| OEM-A-1X | Sensor ground | sensor_ground | G4XSTORMX-A-A24 + G4XSTORMX-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-A-1Y | Injector 3 (front secondary) | injector_out | G4XSTORMX-A-A2 | Injector 3 | injector_out | single_source | |
| OEM-C-3A | +5V sensor supply | vref | G4XSTORMX-A-A32 | +5V Out | vref | single_source | |
| OEM-C-3AB | Sensor ground | sensor_ground | G4XSTORMX-A-A24 + G4XSTORMX-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-C-3D | O2 sensor (narrowband) | lambda_nb_in | G4XSTORMX-A-A33 | Analog Volt 3 | analog_in | single_source | |
| OEM-C-3G | Fuel pressure regulator control (PRC) solenoid | low_side_out | — | — | — | single_source | |
| OEM-C-3H | OMP position sensor | analog_in | G4XSTORMX-A-A14 | Analog Volt 4 | analog_in | single_source | |
| OEM-C-3I | Throttle position (TPS, full range) | analog_in | G4XSTORMX-A-A22 | Analog Volt 2 | analog_in | single_source | |
| OEM-C-3O | Knock sensor | knock_in | G4XSTORMX-B-B9 | Knock 1 | knock_in | single_source | |
| OEM-C-3R | Crank position (CAS NE) | trigger_in | G4XSTORMX-A-A8 | Trigger 1 | trigger_in | single_source | |
| OEM-C-3S | Sensor ground (CAS) | sensor_ground | G4XSTORMX-A-A24 + G4XSTORMX-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-C-3T | Intake air temperature (IAT) | temp_in | G4XSTORMX-A-A16 | Analog Temp 2 | temp_in | single_source | |
| OEM-C-3U | Home position (CAS G) | trigger_in | G4XSTORMX-A-A9 | Trigger 2 | trigger_in | single_source | |
| OEM-C-3V | Fuel temperature | temp_in | G4XSTORMX-B-B6 | Analog Temp 3 | temp_in | single_source | |
| OEM-C-3W | Coolant temperature (ECT) | temp_in | G4XSTORMX-A-A15 | Analog Temp 1 | temp_in | single_source | |
| OEM-D-4A | ECU main power (+12V via main relay/ECR) | power_in | G4XSTORMX-A-A5 | +14V ECU Power | power_in | single_source | |
| OEM-D-4AA | Brake pedal switch | digital_in | G4XSTORMX-A-A31 | Digital Input 2 | digital_in | single_source | |
| OEM-D-4AF | Ignition front trailing | ignition_out | G4XSTORMX-A-A13 | Ignition 1 | ignition_out | single_source | |
| OEM-D-4AH | MAP sensor (PIM) | analog_in | G4XSTORMX-A-A17 | Analog Volt 1 | analog_in | single_source | |
| OEM-D-4AJ | Ignition rear trailing | ignition_out | G4XSTORMX-A-A12 | Ignition 2 | ignition_out | single_source | |
| OEM-D-4AN | Ignition leading (wasted spark) | ignition_out | G4XSTORMX-A-A11 | Ignition 3 | ignition_out | single_source | |
| OEM-D-4B | Battery constant (+12V) | power_in | — | — | — | single_source | |
| OEM-D-4C | Ignition switch / start signal | digital_in | — | — | — | single_source | |
| OEM-D-4D | Air pump clutch relay | low_side_out | G4XSTORMX-A-A20 | Aux 2 | low_side_out | single_source | |
| OEM-D-4E | ECU main power (+12V via main relay/ECR) | power_in | G4XSTORMX-A-A5 | +14V ECU Power | power_in | single_source | |
| OEM-D-4F | Fuel pump speed relay | low_side_out | G4XSTORMX-A-A19 | Aux 3 | low_side_out | single_source | |
| OEM-D-4G | Fuel pump relay | low_side_out | G4XSTORMX-A-A18 | Aux 4 | low_side_out | single_source | |
| OEM-D-4I | A/C relay | low_side_out | G4XSTORMX-A-A29 | Aux 5 | switch_out | single_source | |
| OEM-D-4K | Cooling fan relay (low speed) | low_side_out | G4XSTORMX-A-A28 | Aux 6 | switch_out | single_source | |
| OEM-D-4L | Cooling fan relay (high speed) | low_side_out | G4XSTORMX-A-A27 | Aux 7 | switch_out | single_source | |
| OEM-D-4M | Tachometer output | tacho_out | — | — | — | single_source | |
| OEM-D-4Q | Vehicle speed sensor | digital_in | G4XSTORMX-A-A30 | Digital Input 1 | digital_in | single_source | |
| OEM-D-4S | Clutch switch | digital_in | G4XSTORMX-A-A23 | Digital Input 3 | digital_in | single_source | |
| OEM-D-4V | A/C request | digital_in | G4XSTORMX-B-B21 | Digital Input 4 | digital_in | single_source | |
| OEM-D-4W | Power steering pressure switch | digital_in | G4XSTORMX-B-B20 | Digital Input 5 | digital_in | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-D-4A | SP-14V-1 | 0.85 | no route | ECU main power (+12V via main relay/ECR) | — | |
| W2 | OEM-D-4E | SP-14V-1 | 0.85 | no route | ECU main power (+12V via main relay/ECR) | — | |
| W3 | SP-14V-1 | G4XSTORMX-A-A5 | 0.85 | no route | +14V ECU Power | — | |
| W4 | OEM-A-1AF | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W5 | OEM-A-1AJ | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-A-1L | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | SP-GND-1 | G4XSTORMX-A-A25 | 0.85 | no route | System Ground | — | |
| W8 | SP-GND-1 | G4XSTORMX-A-A34 | 0.85 | no route | System Ground | — | |
| W9 | SP-GND-1 | G4XSTORMX-B-B25 | 0.85 | no route | System Ground | — | |
| W10 | SP-GND-1 | G4XSTORMX-B-B34 | 0.85 | no route | System Ground | — | |
| W11 | OEM-A-1AB | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W12 | OEM-A-1X | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W13 | OEM-C-3AB | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W14 | OEM-C-3S | SP-0V-1 | 0.5 | no route | Sensor ground (CAS) | — | |
| W15 | SP-0V-1 | G4XSTORMX-A-A24 | 0.5 | no route | Sensor Ground | — | |
| W16 | SP-0V-1 | G4XSTORMX-B-B22 | 0.5 | no route | Sensor Ground | — | |
| W17 | OEM-C-3A | G4XSTORMX-A-A32 | 0.5 | no route | +5V sensor supply | — | |
| W18 | OEM-C-3R | G4XSTORMX-A-A8 | 0.5 | no route | Crank position (CAS NE) | — | |
| W19 | OEM-C-3U | G4XSTORMX-A-A9 | 0.5 | no route | Home position (CAS G) | — | |
| W20 | OEM-C-3O | G4XSTORMX-B-B9 | 0.5 | no route | Knock sensor | — | |
| W21 | OEM-D-4AF | G4XSTORMX-A-A13 | 0.5 | no route | Ignition front trailing | — | |
| W22 | OEM-D-4AJ | G4XSTORMX-A-A12 | 0.5 | no route | Ignition rear trailing | — | |
| W23 | OEM-D-4AN | G4XSTORMX-A-A11 | 0.5 | no route | Ignition leading (wasted spark) | — | |
| W24 | OEM-A-1Q | G4XSTORMX-A-A4 | 0.5 | no route | Injector 1 (front primary) | — | |
| W25 | OEM-A-1U | G4XSTORMX-A-A3 | 0.5 | no route | Injector 2 (rear primary) | — | |
| W26 | OEM-A-1Y | G4XSTORMX-A-A2 | 0.5 | no route | Injector 3 (front secondary) | — | |
| W27 | OEM-A-1AC | G4XSTORMX-A-A1 | 0.5 | no route | Injector 4 (rear secondary) | — | |
| W28 | OEM-A-1H | G4XSTORMX-A-A21 | 0.5 | no route | Cooling fan relay (low speed) | — | |
| W29 | OEM-D-4D | G4XSTORMX-A-A20 | 0.5 | no route | Air pump clutch relay | — | |
| W30 | OEM-D-4F | G4XSTORMX-A-A19 | 0.5 | no route | Fuel pump speed relay | — | |
| W31 | OEM-D-4G | G4XSTORMX-A-A18 | 0.5 | no route | Fuel pump relay | — | |
| W32 | OEM-D-4I | G4XSTORMX-A-A29 | 0.5 | no route | A/C relay | — | |
| W33 | OEM-D-4K | G4XSTORMX-A-A28 | 0.5 | no route | Cooling fan relay (low speed) | — | |
| W34 | OEM-D-4L | G4XSTORMX-A-A27 | 0.5 | no route | Cooling fan relay (high speed) | — | |
| W35 | OEM-A-1C | G4XSTORMX-A-A26 | 0.5 | no route | Idle speed control (ISC) solenoid | — | |
| W36 | OEM-A-1E | G4XSTORMX-B-B4 | 0.5 | no route | Turbo charge control solenoid | — | |
| W37 | OEM-A-1G | G4XSTORMX-B-B3 | 0.5 | no route | Purge solenoid | — | |
| W38 | OEM-A-1I | G4XSTORMX-B-B2 | 0.5 | no route | Turbo charge relief solenoid | — | |
| W39 | OEM-A-1K | G4XSTORMX-B-B1 | 0.5 | no route | Turbo pre-control solenoid | — | |
| W40 | OEM-D-4AH | G4XSTORMX-A-A17 | 0.5 | no route | MAP sensor (PIM) | — | |
| W41 | OEM-C-3I | G4XSTORMX-A-A22 | 0.5 | no route | Throttle position (TPS, full range) | — | |
| W42 | OEM-C-3D | G4XSTORMX-A-A33 | 0.5 | no route | O2 sensor (narrowband) | — | |
| W43 | OEM-C-3W | G4XSTORMX-A-A15 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W44 | OEM-C-3T | G4XSTORMX-A-A16 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W45 | OEM-C-3V | G4XSTORMX-B-B6 | 0.5 | no route | Fuel temperature | — | |
| W46 | OEM-C-3H | G4XSTORMX-A-A14 | 0.5 | no route | OMP position sensor | — | |
| W47 | OEM-D-4Q | G4XSTORMX-A-A30 | 0.5 | no route | Vehicle speed sensor | — | |
| W48 | OEM-D-4AA | G4XSTORMX-A-A31 | 0.5 | no route | Brake pedal switch | — | |
| W49 | OEM-D-4S | G4XSTORMX-A-A23 | 0.5 | no route | Clutch switch | — | |
| W50 | OEM-D-4V | G4XSTORMX-B-B21 | 0.5 | no route | A/C request | — | |
| W51 | OEM-D-4W | G4XSTORMX-B-B20 | 0.5 | no route | Power steering pressure switch | — |
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 (16)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | LOAD_UNKNOWN | G4XSTORMX-A-A18 | G4XSTORMX-A-A18 "Aux 4" drives OEM-D-4G Fuel pump relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G4XSTORMX-A-A19 | G4XSTORMX-A-A19 "Aux 3" drives OEM-D-4F Fuel pump speed relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G4XSTORMX-A-A20 | G4XSTORMX-A-A20 "Aux 2" drives OEM-D-4D Air pump clutch relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G4XSTORMX-A-A21 | G4XSTORMX-A-A21 "Aux 1" drives OEM-A-1H Cooling fan relay (low speed) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G4XSTORMX-A-A27 | G4XSTORMX-A-A27 "Aux 7" drives OEM-D-4L Cooling fan relay (high speed) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G4XSTORMX-A-A28 | G4XSTORMX-A-A28 "Aux 6" drives OEM-D-4K Cooling fan relay (low speed) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G4XSTORMX-A-A29 | G4XSTORMX-A-A29 "Aux 5" drives OEM-D-4I A/C relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | NET_FAMILY | OEM-A-1C ↔ G4XSTORMX-A-A26 | OEM-A-1C "Idle speed control (ISC) solenoid" [low_side_out] is wired to G4XSTORMX-A-A26 "Aux 8" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-A-1E ↔ G4XSTORMX-B-B4 | OEM-A-1E "Turbo charge control solenoid" [low_side_out] is wired to G4XSTORMX-B-B4 "Injector 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-1G ↔ G4XSTORMX-B-B3 | OEM-A-1G "Purge solenoid" [low_side_out] is wired to G4XSTORMX-B-B3 "Injector 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-1I ↔ G4XSTORMX-B-B2 | OEM-A-1I "Turbo charge relief solenoid" [low_side_out] is wired to G4XSTORMX-B-B2 "Injector 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-1K ↔ G4XSTORMX-B-B1 | OEM-A-1K "Turbo pre-control solenoid" [low_side_out] is wired to G4XSTORMX-B-B1 "Injector 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-D-4I ↔ G4XSTORMX-A-A29 | OEM-D-4I "A/C relay" [low_side_out] is wired to G4XSTORMX-A-A29 "Aux 5" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-D-4K ↔ G4XSTORMX-A-A28 | OEM-D-4K "Cooling fan relay (low speed)" [low_side_out] is wired to G4XSTORMX-A-A28 "Aux 6" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-D-4L ↔ G4XSTORMX-A-A27 | OEM-D-4L "Cooling fan relay (high speed)" [low_side_out] is wired to G4XSTORMX-A-A27 "Aux 7" [switch_out]. Configure this output as low side. |
| info | UNMAPPED | OEM | 9 optional OEM pins are not mapped: OEM-A-1AA OMP stepper phase B1; OEM-A-1AE OMP stepper phase A1; OEM-A-1M Turbo control solenoid; OEM-A-1O Boost control solenoid; OEM-A-1S OMP stepper phase B2; OEM-A-1W OMP stepper phase A2; OEM-C-3G Fuel pressure regulator control (PRC) solenoid; OEM-D-4C Ignition switch / start signal; OEM-D-4M Tachometer output |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-D-4B | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
Fit check: needs add-on. Resolve these before building: - Oil metering pump stepper driver needed; not documented for this ECU - Sequential twin-turbo control needed; not documented for this ECU - Trigger pattern for Mazda 13B-REW not found in the ECU's docs (Link's trigger-mode list is only inside PCLink, not online) Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Not wired: - OEM-D 4B: Battery constant (+12V): Link G4X StormX has no battery-constant input; not needed - OEM-D 4C: Ignition switch / start signal: key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); Link G4X StormX has no dedicated key-on input - OEM-A 1AA: OMP stepper phase B1: no free hbridge on Link G4X StormX - OEM-A 1AE: OMP stepper phase A1: no free hbridge on Link G4X StormX - OEM-A 1S: OMP stepper phase B2: no free hbridge on Link G4X StormX - OEM-A 1W: OMP stepper phase A2: no free hbridge on Link G4X StormX - OEM-A 1M: Turbo control solenoid: no free low_side/ls_hs/injector/hbridge on Link G4X StormX - OEM-A 1O: Boost control solenoid: no free low_side/ls_hs/injector/hbridge on Link G4X StormX - OEM-C 3G: Fuel pressure regulator control (PRC) solenoid: no free low_side/ls_hs/injector/hbridge on Link G4X StormX - OEM-D 4M: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on Link G4X StormX
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Haltech: RX7 FD Series 7-8 Nexus PnP adapter pinout (HT-186338) | https://www.haltech.com/wp-admin/admin-ajax.php?action=ht_get_file&id=681af8c0cc78f3b6860e615e&op=1 | — | — | — |
| 4 | vendor_doc | Link: G4X StormX quickstart guide | https://linkecu.com/documentation/StormXQuickstartGuide.pdf | — | — | — |
| 3 | community_copy | YourSpec: Link G4X StormX flying-lead harness wiring list | https://wpm.yourspec.com/projects/view/1482 | — | — | — |
| 2 | forum | defreezemotorsport: MS3 FD3S 16-bit ECU pinout | https://defreezemotorsport.ru/doku.php?id=ms3:fd3s162 | — | — | — |