Mazda RX-7 FC 1986-92 (13B-T Turbo II) → Link G4X StormX 108-4000 (auto)
Mazda RX-7 FC 1986-92 (13B-T Turbo II) — Link — G4X StormX
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-08
Before you start
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 50 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-3-I | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | SP-14V-1 | G4XSTORMX-A-A5 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-2-R | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-3-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-3-G | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | SP-GND-1 | G4XSTORMX-A-A25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | G4XSTORMX-A-A34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | G4XSTORMX-B-B25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | G4XSTORMX-B-B34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-1-P | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-1-Q | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-2-C | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-0V-1 | G4XSTORMX-A-A24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | G4XSTORMX-B-B22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-2-A | G4XSTORMX-A-A32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-1-T | G4XSTORMX-A-A8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-1-N | G4XSTORMX-A-A9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-1-R | G4XSTORMX-B-B9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-1-U | G4XSTORMX-A-A13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-1-V | G4XSTORMX-A-A12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-1-X | G4XSTORMX-A-A11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-3-E | G4XSTORMX-A-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-3-H | G4XSTORMX-A-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-3-C | G4XSTORMX-A-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-3-F | G4XSTORMX-A-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-1-F | G4XSTORMX-A-A21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-3-D | G4XSTORMX-A-A20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-1-C | G4XSTORMX-A-A19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-1-S | G4XSTORMX-A-A18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-2-K | G4XSTORMX-A-A29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-2-M | G4XSTORMX-A-A28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-2-N | G4XSTORMX-A-A27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-2-O | G4XSTORMX-A-A26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-2-P | G4XSTORMX-B-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-2-Q | G4XSTORMX-B-B3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-2-E | G4XSTORMX-A-A17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-2-B | G4XSTORMX-A-A22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-2-G | G4XSTORMX-A-A33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-2-D | G4XSTORMX-A-A14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-2-I | G4XSTORMX-A-A15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-2-J | G4XSTORMX-A-A16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-2-L | G4XSTORMX-B-B6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-2-F | G4XSTORMX-B-B33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-2-H | G4XSTORMX-B-B15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-1-O | G4XSTORMX-A-A30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-1-E | G4XSTORMX-A-A31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-1-G | G4XSTORMX-A-A23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-1-H | G4XSTORMX-B-B21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-1-L | G4XSTORMX-B-B20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-3-B | G4XSTORMX-B-B19 | 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-A32 | G4XSTORMX-A-A25 | open (OL) | 5 V sensor reference must not touch power ground | |
| 2 | G4XSTORMX-A-A24 | G4XSTORMX-A-A32 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 3 | G4XSTORMX-A-A24 | G4XSTORMX-A-A5 | open (OL) | sensor ground must not touch +12 V supply | |
| 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 |
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 | — | W25 | — | 0.5 | OEM-3-F | — | — | — |
| A10 | Ignition 4 | — | — | — | — | — | — | — | — |
| A11 | Ignition 3 | — | W21 | — | 0.5 | OEM-1-X | — | — | — |
| A12 | Ignition 2 | — | W20 | — | 0.5 | OEM-1-V | — | — | — |
| A13 | Ignition 1 | — | W19 | — | 0.5 | OEM-1-U | — | — | — |
| A14 | Analog Volt 4 | — | W39 | — | 0.5 | OEM-2-D | — | — | — |
| A15 | Analog Temp 1 | — | W40 | — | 0.5 | OEM-2-I | — | — | — |
| A16 | Analog Temp 2 | — | W41 | — | 0.5 | OEM-2-J | — | — | — |
| A17 | Analog Volt 1 | — | W36 | — | 0.5 | OEM-2-E | — | — | — |
| A18 | Aux 4 | — | W29 | — | 0.5 | OEM-1-S | — | — | — |
| A19 | Aux 3 | — | W28 | — | 0.5 | OEM-1-C | — | — | — |
| A2 | Injector 3 | — | W24 | — | 0.5 | OEM-3-C | — | — | — |
| A20 | Aux 2 | — | W27 | — | 0.5 | OEM-3-D | — | — | — |
| A21 | Aux 1 | — | W26 | — | 0.5 | OEM-1-F | — | — | — |
| A22 | Analog Volt 2 | — | W37 | — | 0.5 | OEM-2-B | — | — | — |
| A23 | Digital Input 3 | — | W47 | — | 0.5 | OEM-1-G | — | — | — |
| A24 | Sensor Ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| A25 | System Ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| A26 | Aux 8 | — | W33 | — | 0.5 | OEM-2-O | — | — | — |
| A27 | Aux 7 | — | W32 | — | 0.5 | OEM-2-N | — | — | — |
| A28 | Aux 6 | — | W31 | — | 0.5 | OEM-2-M | — | — | — |
| A29 | Aux 5 | — | W30 | — | 0.5 | OEM-2-K | — | — | — |
| A3 | Injector 2 | — | W23 | — | 0.5 | OEM-3-H | — | — | — |
| A30 | Digital Input 1 | — | W45 | — | 0.5 | OEM-1-O | — | — | — |
| A31 | Digital Input 2 | — | W46 | — | 0.5 | OEM-1-E | — | — | — |
| A32 | +5V Out | — | W15 | — | 0.5 | OEM-2-A | — | — | — |
| A33 | Analog Volt 3 | — | W38 | — | 0.5 | OEM-2-G | — | — | — |
| A34 | System Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| A4 | Injector 1 | — | W22 | — | 0.5 | OEM-3-E | — | — | — |
| A5 | +14V ECU Power | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| A6 | +8V Out | — | — | — | — | — | — | — | — |
| A7 | Shield Ground | — | — | — | — | — | — | — | — |
| A8 | Trigger 1 | — | W16 | — | 0.5 | OEM-1-T | — | — | — |
| A9 | Trigger 2 | — | W17 | — | 0.5 | OEM-1-N | — | — | — |
G4XSTORMX-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| B1 | Injector 8 | — | — | — | — | — | — | — | — |
| B10 | Ignition 8 | — | — | — | — | — | — | — | — |
| B11 | Ignition 7 | — | — | — | — | — | — | — | — |
| B12 | Ignition 6 | — | — | — | — | — | — | — | — |
| B13 | Ignition 5 | — | — | — | — | — | — | — | — |
| B15 | Analog Volt 6 | — | W44 | — | 0.5 | OEM-2-H | — | — | — |
| B16 | Analog Volt 7 | — | — | — | — | — | — | — | — |
| B17 | Shield Ground | — | — | — | — | — | — | — | — |
| B19 | Digital Input 6 | — | W50 | — | 0.5 | OEM-3-B | — | — | — |
| B2 | Injector 7 | — | — | — | — | — | — | — | — |
| B20 | Digital Input 5 | — | W49 | — | 0.5 | OEM-1-L | — | — | — |
| B21 | Digital Input 4 | — | W48 | — | 0.5 | OEM-1-H | — | — | — |
| B22 | Sensor Ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| B23 | Analog Volt 8 | — | — | — | — | — | — | — | — |
| B25 | System Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| B27 | CAN 2 H | — | — | — | — | — | — | — | — |
| B28 | CAN 2 L | — | — | — | — | — | — | — | — |
| B29 | Digital Input 8 | — | — | — | — | — | — | — | — |
| B3 | Injector 6 | — | W35 | — | 0.5 | OEM-2-Q | — | — | — |
| B30 | Digital Input 7 | — | — | — | — | — | — | — | — |
| B33 | Analog Volt 5 | — | W43 | — | 0.5 | OEM-2-F | — | — | — |
| B34 | System Ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| B4 | Injector 5 | — | W34 | — | 0.5 | OEM-2-P | — | — | — |
| B6 | Analog Temp 3 | — | W42 | — | 0.5 | OEM-2-L | — | — | — |
| B8 | Knock 2 | — | — | — | — | — | — | — | — |
| B9 | Knock 1 | — | W18 | — | 0.5 | OEM-1-R | — | — | — |
OEM-1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| C | Air bypass solenoid | — | W28 | — | 0.5 | G4XSTORMX-A-A19 | — | — | — |
| E | A/C request | — | W46 | — | 0.5 | G4XSTORMX-A-A31 | — | — | — |
| F | A/C clutch relay | — | W26 | — | 0.5 | G4XSTORMX-A-A21 | — | — | — |
| G | Neutral switch | — | W47 | — | 0.5 | G4XSTORMX-A-A23 | — | — | — |
| H | Water temperature switch | — | W48 | — | 0.5 | G4XSTORMX-B-B21 | — | — | — |
| L | Clutch switch | — | W49 | — | 0.5 | G4XSTORMX-B-B20 | — | — | — |
| M | Ignition feedback (tacho) | — | — | — | — | — | — | — | — |
| N | CAS 2-tooth (G, cam) | — | W17 | — | 0.5 | G4XSTORMX-A-A9 | — | — | — |
| O | Vehicle speed (mileage sensor) | — | W45 | — | 0.5 | G4XSTORMX-A-A30 | — | — | — |
| P | CAS ground | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| Q | CAS ground | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| R | Knock input | — | W18 | — | 0.5 | G4XSTORMX-B-B9 | — | — | — |
| S | Port air valve | — | W29 | — | 0.5 | G4XSTORMX-A-A18 | — | — | — |
| T | CAS 24-tooth (NE, crank) | — | W16 | — | 0.5 | G4XSTORMX-A-A8 | — | — | — |
| U | Ignition select (trailing rotor) | — | W19 | — | 0.5 | G4XSTORMX-A-A13 | — | — | — |
| V | Ignition leading | — | W20 | — | 0.5 | G4XSTORMX-A-A12 | — | — | — |
| X | Ignition trailing | — | W21 | — | 0.5 | G4XSTORMX-A-A11 | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | 5V sensor supply | — | W15 | — | 0.5 | G4XSTORMX-A-A32 | — | — | — |
| B | MAP (pressure) signal | — | W37 | — | 0.5 | G4XSTORMX-A-A22 | — | — | — |
| C | Sensor ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| D | O2 sensor signal | — | W39 | — | 0.5 | G4XSTORMX-A-A14 | — | — | — |
| E | Airflow signal (AFM) | — | W36 | — | 0.5 | G4XSTORMX-A-A17 | — | — | — |
| F | Variable resistor (tuning) | — | W43 | — | 0.5 | G4XSTORMX-B-B33 | — | — | — |
| G | Throttle position (TPS) | — | W38 | — | 0.5 | G4XSTORMX-A-A33 | — | — | — |
| H | Atmospheric pressure (ATP) | — | W44 | — | 0.5 | G4XSTORMX-B-B15 | — | — | — |
| I | Coolant temperature (ECT) | — | W40 | — | 0.5 | G4XSTORMX-A-A15 | — | — | — |
| J | Inlet air temperature (IAT) | — | W41 | — | 0.5 | G4XSTORMX-A-A16 | — | — | — |
| K | Turbo control valve (boost) | — | W30 | — | 0.5 | G4XSTORMX-A-A29 | — | — | — |
| L | Manifold air temperature (MAT) | — | W42 | — | 0.5 | G4XSTORMX-B-B6 | — | — | — |
| M | Pressure regulator control valve | — | W31 | — | 0.5 | G4XSTORMX-A-A28 | — | — | — |
| N | EGR valve | — | W32 | — | 0.5 | G4XSTORMX-A-A27 | — | — | — |
| O | Switching valve | — | W33 | — | 0.5 | G4XSTORMX-A-A26 | — | — | — |
| P | Relief valve | — | W34 | — | 0.5 | G4XSTORMX-B-B4 | — | — | — |
| Q | Idle control (BAC) | — | W35 | — | 0.5 | G4XSTORMX-B-B3 | — | — | — |
| R | Power ground | — | W3 | — | 0.85 | SP-GND-1 | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Starter input | — | W50 | — | 0.5 | G4XSTORMX-B-B19 | — | — | — |
| C | Primary injector 2 | — | W24 | — | 0.5 | G4XSTORMX-A-A2 | — | — | — |
| D | Starter inhibit / fuel pump control | — | W27 | — | 0.5 | G4XSTORMX-A-A20 | — | — | — |
| E | Primary injector 1 | — | W22 | — | 0.5 | G4XSTORMX-A-A4 | — | — | — |
| F | Secondary injector 2 | — | W25 | — | 0.5 | G4XSTORMX-A-A1 | — | — | — |
| G | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| H | Secondary injector 1 | — | W23 | — | 0.5 | G4XSTORMX-A-A3 | — | — | — |
| I | Ignition power (+12V via main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| J | Battery constant (+12V) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W10 | — | 0.5 | OEM-1-P | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-1-Q | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-2-C | — | — | — |
| 1 | — | — | W13 | — | 0.5 | G4XSTORMX-A-A24 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | G4XSTORMX-B-B22 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-3-I | — | — | — |
| 1 | — | — | W2 | — | 0.85 | G4XSTORMX-A-A5 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W3 | — | 0.85 | OEM-2-R | — | — | — |
| 1 | — | — | W4 | — | 0.85 | OEM-3-A | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-3-G | — | — | — |
| 1 | — | — | W6 | — | 0.85 | G4XSTORMX-A-A25 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | G4XSTORMX-A-A34 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | G4XSTORMX-B-B25 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | G4XSTORMX-B-B34 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-1-C | Air bypass solenoid | low_side_out | G4XSTORMX-A-A19 | Aux 3 | low_side_out | single_source | |
| OEM-1-E | A/C request | digital_in | G4XSTORMX-A-A31 | Digital Input 2 | digital_in | single_source | |
| OEM-1-F | A/C clutch relay | low_side_out | G4XSTORMX-A-A21 | Aux 1 | low_side_out | single_source | |
| OEM-1-G | Neutral switch | digital_in | G4XSTORMX-A-A23 | Digital Input 3 | digital_in | corroborated | |
| OEM-1-H | Water temperature switch | digital_in | G4XSTORMX-B-B21 | Digital Input 4 | digital_in | corroborated | |
| OEM-1-L | Clutch switch | digital_in | G4XSTORMX-B-B20 | Digital Input 5 | digital_in | single_source | |
| OEM-1-M | Ignition feedback (tacho) | tacho_out | — | — | — | single_source | |
| OEM-1-N | CAS 2-tooth (G, cam) | trigger_in | G4XSTORMX-A-A9 | Trigger 2 | trigger_in | corroborated | |
| OEM-1-O | Vehicle speed (mileage sensor) | digital_in | G4XSTORMX-A-A30 | Digital Input 1 | digital_in | single_source | |
| OEM-1-P | CAS ground | sensor_ground | G4XSTORMX-A-A24 + G4XSTORMX-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-1-Q | CAS ground | sensor_ground | G4XSTORMX-A-A24 + G4XSTORMX-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-1-R | Knock input | knock_in | G4XSTORMX-B-B9 | Knock 1 | knock_in | corroborated | |
| OEM-1-S | Port air valve | low_side_out | G4XSTORMX-A-A18 | Aux 4 | low_side_out | single_source | |
| OEM-1-T | CAS 24-tooth (NE, crank) | trigger_in | G4XSTORMX-A-A8 | Trigger 1 | trigger_in | corroborated | |
| OEM-1-U | Ignition select (trailing rotor) | ignition_out | G4XSTORMX-A-A13 | Ignition 1 | ignition_out | corroborated | |
| OEM-1-V | Ignition leading | ignition_out | G4XSTORMX-A-A12 | Ignition 2 | ignition_out | corroborated | |
| OEM-1-X | Ignition trailing | ignition_out | G4XSTORMX-A-A11 | Ignition 3 | ignition_out | single_source | |
| OEM-2-A | 5V sensor supply | vref | G4XSTORMX-A-A32 | +5V Out | vref | single_source | |
| OEM-2-B | MAP (pressure) signal | analog_in | G4XSTORMX-A-A22 | Analog Volt 2 | analog_in | single_source | |
| OEM-2-C | Sensor ground | sensor_ground | G4XSTORMX-A-A24 + G4XSTORMX-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-2-D | O2 sensor signal | lambda_nb_in | G4XSTORMX-A-A14 | Analog Volt 4 | analog_in | single_source | |
| OEM-2-E | Airflow signal (AFM) | analog_in | G4XSTORMX-A-A17 | Analog Volt 1 | analog_in | single_source | |
| OEM-2-F | Variable resistor (tuning) | analog_in | G4XSTORMX-B-B33 | Analog Volt 5 | analog_in | single_source | |
| OEM-2-G | Throttle position (TPS) | analog_in | G4XSTORMX-A-A33 | Analog Volt 3 | analog_in | single_source | |
| OEM-2-H | Atmospheric pressure (ATP) | analog_in | G4XSTORMX-B-B15 | Analog Volt 6 | analog_in | single_source | |
| OEM-2-I | Coolant temperature (ECT) | temp_in | G4XSTORMX-A-A15 | Analog Temp 1 | temp_in | single_source | |
| OEM-2-J | Inlet air temperature (IAT) | temp_in | G4XSTORMX-A-A16 | Analog Temp 2 | temp_in | single_source | |
| OEM-2-K | Turbo control valve (boost) | low_side_out | G4XSTORMX-A-A29 | Aux 5 | switch_out | single_source | |
| OEM-2-L | Manifold air temperature (MAT) | temp_in | G4XSTORMX-B-B6 | Analog Temp 3 | temp_in | single_source | |
| OEM-2-M | Pressure regulator control valve | low_side_out | G4XSTORMX-A-A28 | Aux 6 | switch_out | single_source | |
| OEM-2-N | EGR valve | low_side_out | G4XSTORMX-A-A27 | Aux 7 | switch_out | single_source | |
| OEM-2-O | Switching valve | low_side_out | G4XSTORMX-A-A26 | Aux 8 | switch_out | single_source | |
| OEM-2-P | Relief valve | low_side_out | G4XSTORMX-B-B4 | Injector 5 | injector_out | single_source | |
| OEM-2-Q | Idle control (BAC) | low_side_out | G4XSTORMX-B-B3 | Injector 6 | injector_out | single_source | |
| OEM-2-R | 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-3-A | 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-3-B | Starter input | digital_in | G4XSTORMX-B-B19 | Digital Input 6 | digital_in | single_source | |
| OEM-3-C | Primary injector 2 | injector_out | G4XSTORMX-A-A2 | Injector 3 | injector_out | single_source | |
| OEM-3-D | Starter inhibit / fuel pump control | low_side_out | G4XSTORMX-A-A20 | Aux 2 | low_side_out | single_source | |
| OEM-3-E | Primary injector 1 | injector_out | G4XSTORMX-A-A4 | Injector 1 | injector_out | single_source | |
| OEM-3-F | Secondary injector 2 | injector_out | G4XSTORMX-A-A1 | Injector 4 | injector_out | single_source | |
| OEM-3-G | 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-3-H | Secondary injector 1 | injector_out | G4XSTORMX-A-A3 | Injector 2 | injector_out | single_source | |
| OEM-3-I | Ignition power (+12V via main relay) | power_in | G4XSTORMX-A-A5 | +14V ECU Power | power_in | single_source | |
| OEM-3-J | Battery constant (+12V) | power_in | — | — | — | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-3-I | SP-14V-1 | 0.85 | no route | Ignition power (+12V via main relay) | — | |
| W2 | SP-14V-1 | G4XSTORMX-A-A5 | 0.85 | no route | +14V ECU Power | — | |
| W3 | OEM-2-R | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W4 | OEM-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W5 | OEM-3-G | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | SP-GND-1 | G4XSTORMX-A-A25 | 0.85 | no route | System Ground | — | |
| W7 | SP-GND-1 | G4XSTORMX-A-A34 | 0.85 | no route | System Ground | — | |
| W8 | SP-GND-1 | G4XSTORMX-B-B25 | 0.85 | no route | System Ground | — | |
| W9 | SP-GND-1 | G4XSTORMX-B-B34 | 0.85 | no route | System Ground | — | |
| W10 | OEM-1-P | SP-0V-1 | 0.5 | no route | CAS ground | — | |
| W11 | OEM-1-Q | SP-0V-1 | 0.5 | no route | CAS ground | — | |
| W12 | OEM-2-C | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W13 | SP-0V-1 | G4XSTORMX-A-A24 | 0.5 | no route | Sensor Ground | — | |
| W14 | SP-0V-1 | G4XSTORMX-B-B22 | 0.5 | no route | Sensor Ground | — | |
| W15 | OEM-2-A | G4XSTORMX-A-A32 | 0.5 | no route | 5V sensor supply | — | |
| W16 | OEM-1-T | G4XSTORMX-A-A8 | 0.5 | no route | CAS 24-tooth (NE, crank) | — | |
| W17 | OEM-1-N | G4XSTORMX-A-A9 | 0.5 | no route | CAS 2-tooth (G, cam) | — | |
| W18 | OEM-1-R | G4XSTORMX-B-B9 | 0.5 | no route | Knock input | — | |
| W19 | OEM-1-U | G4XSTORMX-A-A13 | 0.5 | no route | Ignition select (trailing rotor) | — | |
| W20 | OEM-1-V | G4XSTORMX-A-A12 | 0.5 | no route | Ignition leading | — | |
| W21 | OEM-1-X | G4XSTORMX-A-A11 | 0.5 | no route | Ignition trailing | — | |
| W22 | OEM-3-E | G4XSTORMX-A-A4 | 0.5 | no route | Primary injector 1 | — | |
| W23 | OEM-3-H | G4XSTORMX-A-A3 | 0.5 | no route | Secondary injector 1 | — | |
| W24 | OEM-3-C | G4XSTORMX-A-A2 | 0.5 | no route | Primary injector 2 | — | |
| W25 | OEM-3-F | G4XSTORMX-A-A1 | 0.5 | no route | Secondary injector 2 | — | |
| W26 | OEM-1-F | G4XSTORMX-A-A21 | 0.5 | no route | A/C clutch relay | — | |
| W27 | OEM-3-D | G4XSTORMX-A-A20 | 0.5 | no route | Starter inhibit / fuel pump control | — | |
| W28 | OEM-1-C | G4XSTORMX-A-A19 | 0.5 | no route | Air bypass solenoid | — | |
| W29 | OEM-1-S | G4XSTORMX-A-A18 | 0.5 | no route | Port air valve | — | |
| W30 | OEM-2-K | G4XSTORMX-A-A29 | 0.5 | no route | Turbo control valve (boost) | — | |
| W31 | OEM-2-M | G4XSTORMX-A-A28 | 0.5 | no route | Pressure regulator control valve | — | |
| W32 | OEM-2-N | G4XSTORMX-A-A27 | 0.5 | no route | EGR valve | — | |
| W33 | OEM-2-O | G4XSTORMX-A-A26 | 0.5 | no route | Switching valve | — | |
| W34 | OEM-2-P | G4XSTORMX-B-B4 | 0.5 | no route | Relief valve | — | |
| W35 | OEM-2-Q | G4XSTORMX-B-B3 | 0.5 | no route | Idle control (BAC) | — | |
| W36 | OEM-2-E | G4XSTORMX-A-A17 | 0.5 | no route | Airflow signal (AFM) | — | |
| W37 | OEM-2-B | G4XSTORMX-A-A22 | 0.5 | no route | MAP (pressure) signal | — | |
| W38 | OEM-2-G | G4XSTORMX-A-A33 | 0.5 | no route | Throttle position (TPS) | — | |
| W39 | OEM-2-D | G4XSTORMX-A-A14 | 0.5 | no route | O2 sensor signal | — | |
| W40 | OEM-2-I | G4XSTORMX-A-A15 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W41 | OEM-2-J | G4XSTORMX-A-A16 | 0.5 | no route | Inlet air temperature (IAT) | — | |
| W42 | OEM-2-L | G4XSTORMX-B-B6 | 0.5 | no route | Manifold air temperature (MAT) | — | |
| W43 | OEM-2-F | G4XSTORMX-B-B33 | 0.5 | no route | Variable resistor (tuning) | — | |
| W44 | OEM-2-H | G4XSTORMX-B-B15 | 0.5 | no route | Atmospheric pressure (ATP) | — | |
| W45 | OEM-1-O | G4XSTORMX-A-A30 | 0.5 | no route | Vehicle speed (mileage sensor) | — | |
| W46 | OEM-1-E | G4XSTORMX-A-A31 | 0.5 | no route | A/C request | — | |
| W47 | OEM-1-G | G4XSTORMX-A-A23 | 0.5 | no route | Neutral switch | — | |
| W48 | OEM-1-H | G4XSTORMX-B-B21 | 0.5 | no route | Water temperature switch | — | |
| W49 | OEM-1-L | G4XSTORMX-B-B20 | 0.5 | no route | Clutch switch | — | |
| W50 | OEM-3-B | G4XSTORMX-B-B19 | 0.5 | no route | Starter input | — |
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 (8)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | LOAD_UNKNOWN | G4XSTORMX-A-A21 | G4XSTORMX-A-A21 "Aux 1" drives OEM-1-F A/C clutch relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | NET_FAMILY | OEM-2-K ↔ G4XSTORMX-A-A29 | OEM-2-K "Turbo control valve (boost)" [low_side_out] is wired to G4XSTORMX-A-A29 "Aux 5" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-2-M ↔ G4XSTORMX-A-A28 | OEM-2-M "Pressure regulator control valve" [low_side_out] is wired to G4XSTORMX-A-A28 "Aux 6" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-2-N ↔ G4XSTORMX-A-A27 | OEM-2-N "EGR valve" [low_side_out] is wired to G4XSTORMX-A-A27 "Aux 7" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-2-O ↔ G4XSTORMX-A-A26 | OEM-2-O "Switching valve" [low_side_out] is wired to G4XSTORMX-A-A26 "Aux 8" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-2-P ↔ G4XSTORMX-B-B4 | OEM-2-P "Relief valve" [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-2-Q ↔ G4XSTORMX-B-B3 | OEM-2-Q "Idle control (BAC)" [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 | UNMAPPED | OEM | 1 optional OEM pins are not mapped: OEM-1-M Ignition feedback (tacho) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-3-J | 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: unconfirmed. Confirm these before building: - Trigger pattern for Mazda 13B-T 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 2026-10-06. Review every wire against both manuals before building. Not wired: - OEM-3 J: Battery constant (+12V): Link G4X StormX has no battery-constant input; not needed - OEM-1 M: Ignition feedback (tacho): 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 | Adaptronic: Select RX7 Series 4 FC Turbo plug-in pinout | https://www.rx7club.com/attachments/adaptronic-engine-mgmt-aus-311/543323d1411579751-need-pin-out-diagram-s5-pnp-rx7_s4_sel_pinout.pdf | — | — | — |
| 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 | MSExtra: FC3S CAS wiring (NE/G) | https://www.msextra.com/forums/viewtopic.php?p=279694 | — | — | — |
| 2 | forum | NoPistons: S4 Turbo II main harness wiring (ECU plug, colours only) | https://www.nopistons.com/1st-generation-specific-16/thinking-putting-89-13bt-sa22-66354/page2/ | — | — | — |