MX-5 Miata NB1 1999-00 (BP-4W) → rusEFI Proteus (auto)
MX-5 Miata NB1 1999-00 (BP-4W) — rusEFI — Proteus
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-04
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
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) | — | W42 | — | 0.5 | PROTEUS-Black35-5 | — | — | — |
| F | Brake switch | — | W61 | — | 0.5 | PROTEUS-Black23-10 | — | — | — |
| G | Power steering pressure switch | — | W62 | — | 0.5 | PROTEUS-Black23-3 | — | — | — |
| I | Condenser fan relay | — | W35 | — | 0.5 | PROTEUS-Black35-20 | — | — | — |
| O | Alternator control | — | W43 | — | 0.5 | PROTEUS-Black35-6 | — | — | — |
| P | A/C request | — | W63 | — | 0.5 | PROTEUS-Black23-9 | — | — | — |
| Q | Charge lamp | — | W44 | — | 0.5 | PROTEUS-Black35-7 | — | — | — |
| R | Cooling fan relay | — | W36 | — | 0.5 | PROTEUS-Black35-9 | — | — | — |
| S | A/C clutch relay | — | W37 | — | 0.5 | PROTEUS-Black35-21 | — | — | — |
| U | Front O2 heater | — | W39 | — | 0.5 | PROTEUS-Black35-11 | — | — | — |
| V | Neutral switch | — | W64 | — | 0.5 | PROTEUS-Black23-11 | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Fuel tank pressure | — | W57 | — | 0.5 | PROTEUS-White35-15 | — | — | — |
| B | Intake air temperature (IAT) | — | W56 | — | 0.5 | PROTEUS-White35-30 | — | — | — |
| C | Front O2 signal | — | W53 | — | 0.5 | PROTEUS-White35-14 | — | — | — |
| D | Vehicle speed | — | W60 | — | 0.5 | PROTEUS-Black23-2 | — | — | — |
| E | Coolant temperature (ECT) | — | W55 | — | 0.5 | PROTEUS-White35-20 | — | — | — |
| F | Knock sensor | — | W28 | — | 0.5 | PROTEUS-White35-34 | — | — | — |
| H | Cam position (CMP) | — | W27 | — | 0.5 | PROTEUS-Black23-1 | — | — | — |
| I | +5V sensor supply | — | W24 | — | 0.5 | PROTEUS-White35-10 | — | — | — |
| J | Crank position (CKP) | — | W25 | — | 0.5 | PROTEUS-Black23-5 | — | — | — |
| K | Tachometer output | — | — | — | — | — | — | — | — |
| L | Mass air flow (MAF) | — | W51 | — | 0.5 | PROTEUS-White35-13 | — | — | — |
| M | EGR valve | — | W45 | — | 0.5 | PROTEUS-Black35-19 | — | — | — |
| N | EGR valve | — | W46 | — | 0.5 | PROTEUS-Black35-8 | — | — | — |
| O | EGR valve | — | W47 | — | 0.5 | PROTEUS-Black23-6 | — | — | — |
| P | EGR valve | — | W48 | — | 0.5 | PROTEUS-Black23-7 | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| C | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| E | Throttle position (TPS) | — | W52 | — | 0.5 | PROTEUS-White35-24 | — | — | — |
| F | Signal ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| G | Ignition 1 (coils 1+4, wasted spark) | — | W29 | — | 0.5 | PROTEUS-Black35-35 | — | — | — |
| H | Ignition 2 (coils 2+3, wasted spark) | — | W30 | — | 0.5 | PROTEUS-Black35-34 | — | — | — |
| I | Clutch switch | — | W65 | — | 0.5 | PROTEUS-White35-27 | — | — | — |
| J | Rear O2 signal | — | W54 | — | 0.5 | PROTEUS-White35-25 | — | — | — |
| K | Fuel level | — | W58 | — | 0.5 | PROTEUS-White35-26 | — | — | — |
| L | Evap purge solenoid | — | W49 | — | 0.5 | PROTEUS-Black23-15 | — | — | — |
| M | ISC valve +14V feed | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| N | Fuel pump relay | — | W38 | — | 0.5 | PROTEUS-Black35-10 | — | — | — |
| O | ISC valve low side | — | W41 | — | 0.5 | PROTEUS-Black35-23 | — | — | — |
| Q | VICS solenoid (intake butterflies) | — | W50 | — | 0.5 | PROTEUS-Black23-8 | — | — | — |
| S | EGR boost sensor | — | W59 | — | 0.5 | PROTEUS-White35-16 | — | — | — |
| T | EGR boost solenoid | — | — | — | — | — | — | — | — |
| U | Canister drain cut valve (CDCV) | — | — | — | — | — | — | — | — |
| V | Rear O2 heater | — | W40 | — | 0.5 | PROTEUS-Black35-12 | — | — | — |
| W | Injector 1 | — | W31 | — | 0.5 | PROTEUS-Black35-3 | — | — | — |
| X | Injector 2 | — | W32 | — | 0.5 | PROTEUS-Black35-15 | — | — | — |
| Y | Injector 3 | — | W33 | — | 0.5 | PROTEUS-Black35-4 | — | — | — |
| Z | Injector 4 | — | W34 | — | 0.5 | PROTEUS-Black35-16 | — | — | — |
PROTEUS-Black23
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Digital 2 | — | W27 | — | 0.5 | OEM-2-H | — | — | — |
| 10 | Digital 1 | — | W61 | — | 0.5 | OEM-1-F | — | — | — |
| 11 | Digital 6 | — | W64 | — | 0.5 | OEM-1-V | — | — | — |
| 12 | VR 2 negative | — | — | — | — | — | — | — | — |
| 13 | VR 1 negative | — | W26 | — | 0.5 | SP-0V-1 | — | — | — |
| 14 | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 15 | ETB 2 positive | — | W49 | — | 0.5 | OEM-3-L | — | — | — |
| 16 | CAN 1 Low | — | — | — | — | — | — | — | — |
| 17 | CAN 1 High | — | — | — | — | — | — | — | — |
| 18 | Ignition switch in | — | — | — | — | — | — | — | — |
| 19 | Power ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | Digital 3 | — | W60 | — | 0.5 | OEM-2-D | — | — | — |
| 20 | Power ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | CAN 2 Low | — | — | — | — | — | — | — | — |
| 22 | CAN 2 High | — | — | — | — | — | — | — | — |
| 23 | Main relay feed | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Digital 4 | — | W62 | — | 0.5 | OEM-1-G | — | — | — |
| 4 | VR 2 positive | — | — | — | — | — | — | — | — |
| 5 | VR 1 positive | — | W25 | — | 0.5 | OEM-2-J | — | — | — |
| 6 | ETB 1 negative | — | W47 | — | 0.5 | OEM-2-O | — | — | — |
| 7 | ETB 1 positive | — | W48 | — | 0.5 | OEM-2-P | — | — | — |
| 8 | ETB 2 negative | — | W50 | — | 0.5 | OEM-3-Q | — | — | — |
| 9 | Digital 5 | — | W63 | — | 0.5 | OEM-1-P | — | — | — |
PROTEUS-Black35
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Highside 2 | — | — | — | — | — | — | — | — |
| 10 | Lowside 13 | — | W38 | — | 0.5 | OEM-3-N | — | — | — |
| 11 | Lowside 14 | — | W39 | — | 0.5 | OEM-1-U | — | — | — |
| 12 | Lowside 15 | — | W40 | — | 0.5 | OEM-3-V | — | — | — |
| 13 | Highside 3 | — | — | — | — | — | — | — | — |
| 14 | Highside 4 | — | — | — | — | — | — | — | — |
| 15 | Injector 2 | — | W32 | — | 0.5 | OEM-3-X | — | — | — |
| 16 | Injector 4 | — | W34 | — | 0.5 | OEM-3-Z | — | — | — |
| 17 | Power ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 18 | Power ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 19 | Injector 8 | — | W45 | — | 0.5 | OEM-2-M | — | — | — |
| 2 | Highside 1 | — | — | — | — | — | — | — | — |
| 20 | Lowside 10 | — | W35 | — | 0.5 | OEM-1-I | — | — | — |
| 21 | Lowside 12 | — | W37 | — | 0.5 | OEM-1-S | — | — | — |
| 22 | Ignition 3 | — | — | — | — | — | — | — | — |
| 23 | Lowside 16 | — | W41 | — | 0.5 | OEM-3-O | — | — | — |
| 24 | Power ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 25 | Ignition 12 | — | — | — | — | — | — | — | — |
| 26 | Ignition 11 | — | — | — | — | — | — | — | — |
| 27 | Ignition 10 | — | — | — | — | — | — | — | — |
| 28 | Ignition 9 | — | — | — | — | — | — | — | — |
| 29 | Ignition 8 | — | — | — | — | — | — | — | — |
| 3 | Injector 1 | — | W31 | — | 0.5 | OEM-3-W | — | — | — |
| 30 | Ignition 7 | — | — | — | — | — | — | — | — |
| 31 | Ignition 6 | — | — | — | — | — | — | — | — |
| 32 | Ignition 5 | — | — | — | — | — | — | — | — |
| 33 | Ignition 4 | — | — | — | — | — | — | — | — |
| 34 | Ignition 2 | — | W30 | — | 0.5 | OEM-3-H | — | — | — |
| 35 | Ignition 1 | — | W29 | — | 0.5 | OEM-3-G | — | — | — |
| 4 | Injector 3 | — | W33 | — | 0.5 | OEM-3-Y | — | — | — |
| 5 | Injector 5 | — | W42 | — | 0.5 | OEM-1-E | — | — | — |
| 6 | Injector 6 | — | W43 | — | 0.5 | OEM-1-O | — | — | — |
| 7 | Injector 7 | — | W44 | — | 0.5 | OEM-1-Q | — | — | — |
| 8 | Injector 9 | — | W46 | — | 0.5 | OEM-2-N | — | — | — |
| 9 | Lowside 11 | — | W36 | — | 0.5 | OEM-1-R | — | — | — |
PROTEUS-White35
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Sensor ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 10 | 5V supply #2 | — | W24 | — | 0.5 | OEM-2-I | — | — | — |
| 11 | 12V sensor supply | — | — | — | — | — | — | — | — |
| 12 | 12V sensor supply | — | — | — | — | — | — | — | — |
| 13 | Analog Volt 1 | — | W51 | — | 0.5 | OEM-2-L | — | — | — |
| 14 | Analog Volt 3 | — | W53 | — | 0.5 | OEM-2-C | — | — | — |
| 15 | Analog Volt 5 | — | W57 | — | 0.5 | OEM-2-A | — | — | — |
| 16 | Analog Volt 7 | — | W59 | — | 0.5 | OEM-3-S | — | — | — |
| 17 | Analog Volt 9 | — | — | — | — | — | — | — | — |
| 18 | Analog Volt 11 | — | — | — | — | — | — | — | — |
| 19 | Thermistor 1 | — | — | — | — | — | — | — | — |
| 2 | Sensor ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 20 | Coolant temp (CLT) | — | W55 | — | 0.5 | OEM-2-E | — | — | — |
| 21 | 5V supply #1 | — | — | — | — | — | — | — | — |
| 22 | 5V supply #2 | — | — | — | — | — | — | — | — |
| 23 | Sensor ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Analog Volt 2 | — | W52 | — | 0.5 | OEM-3-E | — | — | — |
| 25 | Analog Volt 4 | — | W54 | — | 0.5 | OEM-3-J | — | — | — |
| 26 | Analog Volt 6 | — | W58 | — | 0.5 | OEM-3-K | — | — | — |
| 27 | Analog Volt 8 | — | W65 | — | 0.5 | OEM-3-I | — | — | — |
| 28 | Analog Volt 10 | — | — | — | — | — | — | — | — |
| 29 | Sensor ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Sensor ground | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 30 | Intake air temp (IAT) | — | W56 | — | 0.5 | OEM-2-B | — | — | — |
| 31 | Thermistor 4 | — | — | — | — | — | — | — | — |
| 32 | 5V supply #1 | — | — | — | — | — | — | — | — |
| 33 | 5V supply #2 | — | — | — | — | — | — | — | — |
| 34 | Knock 1 | — | W28 | — | 0.5 | OEM-2-F | — | — | — |
| 35 | Knock 2 | — | — | — | — | — | — | — | — |
| 4 | Sensor ground | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Sensor ground | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sensor ground | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 7 | Sensor ground | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Sensor ground | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 9 | 5V supply #1 | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-3-F | — | — | — |
| 1 | — | — | W14 | — | 0.5 | PROTEUS-White35-1 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | PROTEUS-White35-2 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | PROTEUS-White35-23 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | PROTEUS-White35-29 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | PROTEUS-White35-3 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | PROTEUS-White35-4 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | PROTEUS-White35-5 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | PROTEUS-White35-6 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | PROTEUS-White35-7 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | PROTEUS-White35-8 | — | — | — |
| 1 | — | — | W26 | — | 0.5 | PROTEUS-Black23-13 | — | — | — |
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 | PROTEUS-Black23-23 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-3-A | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-3-B | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-3-C | — | — | — |
| 1 | — | — | W7 | — | 0.85 | PROTEUS-Black23-14 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | PROTEUS-Black23-19 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | PROTEUS-Black23-20 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | PROTEUS-Black35-17 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | PROTEUS-Black35-18 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | PROTEUS-Black35-24 | — | — | — |
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 | PROTEUS-Black23-23 | Main relay feed | power_in | single_source | |
| OEM-1-E | Malfunction indicator lamp (MIL) | low_side_out | PROTEUS-Black35-5 | Injector 5 | injector_out | single_source | |
| OEM-1-F | Brake switch | digital_in | PROTEUS-Black23-10 | Digital 1 | digital_in | single_source | |
| OEM-1-G | Power steering pressure switch | digital_in | PROTEUS-Black23-3 | Digital 4 | digital_in | single_source | |
| OEM-1-I | Condenser fan relay | low_side_out | PROTEUS-Black35-20 | Lowside 10 | low_side_out | single_source | |
| OEM-1-O | Alternator control | low_side_out | PROTEUS-Black35-6 | Injector 6 | injector_out | single_source | |
| OEM-1-P | A/C request | digital_in | PROTEUS-Black23-9 | Digital 5 | digital_in | single_source | |
| OEM-1-Q | Charge lamp | low_side_out | PROTEUS-Black35-7 | Injector 7 | injector_out | single_source | |
| OEM-1-R | Cooling fan relay | low_side_out | PROTEUS-Black35-9 | Lowside 11 | low_side_out | single_source | |
| OEM-1-S | A/C clutch relay | low_side_out | PROTEUS-Black35-21 | Lowside 12 | low_side_out | single_source | |
| OEM-1-U | Front O2 heater | low_side_out | PROTEUS-Black35-11 | Lowside 14 | low_side_out | single_source | |
| OEM-1-V | Neutral switch | digital_in | PROTEUS-Black23-11 | Digital 6 | digital_in | single_source | |
| OEM-2-A | Fuel tank pressure | analog_in | PROTEUS-White35-15 | Analog Volt 5 | analog_in | single_source | |
| OEM-2-B | Intake air temperature (IAT) | temp_in | PROTEUS-White35-30 | Intake air temp (IAT) | temp_in | single_source | |
| OEM-2-C | Front O2 signal | lambda_nb_in | PROTEUS-White35-14 | Analog Volt 3 | analog_in | single_source | |
| OEM-2-D | Vehicle speed | digital_in | PROTEUS-Black23-2 | Digital 3 | digital_in | single_source | |
| OEM-2-E | Coolant temperature (ECT) | temp_in | PROTEUS-White35-20 | Coolant temp (CLT) | temp_in | single_source | |
| OEM-2-F | Knock sensor | knock_in | PROTEUS-White35-34 | Knock 1 | knock_in | single_source | |
| OEM-2-H | Cam position (CMP) | trigger_in | PROTEUS-Black23-1 | Digital 2 | trigger_in | single_source | |
| OEM-2-I | +5V sensor supply | vref | PROTEUS-White35-10 | 5V supply #2 | vref | single_source | |
| OEM-2-J | Crank position (CKP) | trigger_in | PROTEUS-Black23-5 | VR 1 positive | trigger_in | single_source | |
| OEM-2-K | Tachometer output | tacho_out | — | — | — | single_source | |
| OEM-2-L | Mass air flow (MAF) | analog_in | PROTEUS-White35-13 | Analog Volt 1 | analog_in | single_source | |
| OEM-2-M | EGR valve | low_side_out | PROTEUS-Black35-19 | Injector 8 | injector_out | single_source | |
| OEM-2-N | EGR valve | low_side_out | PROTEUS-Black35-8 | Injector 9 | injector_out | single_source | |
| OEM-2-O | EGR valve | low_side_out | PROTEUS-Black23-6 | ETB 1 negative | hbridge_out | single_source | |
| OEM-2-P | EGR valve | low_side_out | PROTEUS-Black23-7 | ETB 1 positive | hbridge_out | single_source | |
| OEM-3-A | Power ground | ground | PROTEUS-Black23-14 + PROTEUS-Black23-19 + PROTEUS-Black23-20 + PROTEUS-Black35-17 + PROTEUS-Black35-18 + PROTEUS-Black35-24 | Power ground + Power ground + Power ground + Power ground + Power ground + Power ground | ground | single_source | |
| OEM-3-B | Power ground | ground | PROTEUS-Black23-14 + PROTEUS-Black23-19 + PROTEUS-Black23-20 + PROTEUS-Black35-17 + PROTEUS-Black35-18 + PROTEUS-Black35-24 | Power ground + Power ground + Power ground + Power ground + Power ground + Power ground | ground | single_source | |
| OEM-3-C | Power ground | ground | PROTEUS-Black23-14 + PROTEUS-Black23-19 + PROTEUS-Black23-20 + PROTEUS-Black35-17 + PROTEUS-Black35-18 + PROTEUS-Black35-24 | Power ground + Power ground + Power ground + Power ground + Power ground + Power ground | ground | single_source | |
| OEM-3-E | Throttle position (TPS) | analog_in | PROTEUS-White35-24 | Analog Volt 2 | analog_in | single_source | |
| OEM-3-F | Signal ground | sensor_ground | PROTEUS-Black23-13 + PROTEUS-White35-1 + PROTEUS-White35-2 + PROTEUS-White35-23 + PROTEUS-White35-29 + PROTEUS-White35-3 + PROTEUS-White35-4 + PROTEUS-White35-5 + PROTEUS-White35-6 + PROTEUS-White35-7 + PROTEUS-White35-8 | VR 1 negative + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground | sensor_ground + trigger_in | single_source | |
| OEM-3-G | Ignition 1 (coils 1+4, wasted spark) | ignition_out | PROTEUS-Black35-35 | Ignition 1 | ignition_out | single_source | |
| OEM-3-H | Ignition 2 (coils 2+3, wasted spark) | ignition_out | PROTEUS-Black35-34 | Ignition 2 | ignition_out | single_source | |
| OEM-3-I | Clutch switch | digital_in | PROTEUS-White35-27 | Analog Volt 8 | analog_in | single_source | |
| OEM-3-J | Rear O2 signal | lambda_nb_in | PROTEUS-White35-25 | Analog Volt 4 | analog_in | single_source | |
| OEM-3-K | Fuel level | analog_in | PROTEUS-White35-26 | Analog Volt 6 | analog_in | single_source | |
| OEM-3-L | Evap purge solenoid | low_side_out | PROTEUS-Black23-15 | ETB 2 positive | hbridge_out | single_source | |
| OEM-3-M | ISC valve +14V feed | power_in | PROTEUS-Black23-23 | Main relay feed | power_in | single_source | |
| OEM-3-N | Fuel pump relay | low_side_out | PROTEUS-Black35-10 | Lowside 13 | low_side_out | single_source | |
| OEM-3-O | ISC valve low side | low_side_out | PROTEUS-Black35-23 | Lowside 16 | low_side_out | single_source | |
| OEM-3-Q | VICS solenoid (intake butterflies) | low_side_out | PROTEUS-Black23-8 | ETB 2 negative | hbridge_out | single_source | |
| OEM-3-S | EGR boost sensor | analog_in | PROTEUS-White35-16 | Analog Volt 7 | analog_in | single_source | |
| OEM-3-T | EGR boost solenoid | low_side_out | — | — | — | single_source | |
| OEM-3-U | Canister drain cut valve (CDCV) | low_side_out | — | — | — | single_source | |
| OEM-3-V | Rear O2 heater | low_side_out | PROTEUS-Black35-12 | Lowside 15 | low_side_out | single_source | |
| OEM-3-W | Injector 1 | injector_out | PROTEUS-Black35-3 | Injector 1 | injector_out | single_source | |
| OEM-3-X | Injector 2 | injector_out | PROTEUS-Black35-15 | Injector 2 | injector_out | single_source | |
| OEM-3-Y | Injector 3 | injector_out | PROTEUS-Black35-4 | Injector 3 | injector_out | single_source | |
| OEM-3-Z | Injector 4 | injector_out | PROTEUS-Black35-16 | Injector 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 | PROTEUS-Black23-23 | 0.85 | no route | Main relay feed | — | |
| W4 | OEM-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W5 | OEM-3-B | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-3-C | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | SP-GND-1 | PROTEUS-Black23-14 | 0.85 | no route | Power ground | — | |
| W8 | SP-GND-1 | PROTEUS-Black23-19 | 0.85 | no route | Power ground | — | |
| W9 | SP-GND-1 | PROTEUS-Black23-20 | 0.85 | no route | Power ground | — | |
| W10 | SP-GND-1 | PROTEUS-Black35-17 | 0.85 | no route | Power ground | — | |
| W11 | SP-GND-1 | PROTEUS-Black35-18 | 0.85 | no route | Power ground | — | |
| W12 | SP-GND-1 | PROTEUS-Black35-24 | 0.85 | no route | Power ground | — | |
| W13 | OEM-3-F | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W14 | SP-0V-1 | PROTEUS-White35-1 | 0.5 | no route | Sensor ground | — | |
| W15 | SP-0V-1 | PROTEUS-White35-2 | 0.5 | no route | Sensor ground | — | |
| W16 | SP-0V-1 | PROTEUS-White35-23 | 0.5 | no route | Sensor ground | — | |
| W17 | SP-0V-1 | PROTEUS-White35-29 | 0.5 | no route | Sensor ground | — | |
| W18 | SP-0V-1 | PROTEUS-White35-3 | 0.5 | no route | Sensor ground | — | |
| W19 | SP-0V-1 | PROTEUS-White35-4 | 0.5 | no route | Sensor ground | — | |
| W20 | SP-0V-1 | PROTEUS-White35-5 | 0.5 | no route | Sensor ground | — | |
| W21 | SP-0V-1 | PROTEUS-White35-6 | 0.5 | no route | Sensor ground | — | |
| W22 | SP-0V-1 | PROTEUS-White35-7 | 0.5 | no route | Sensor ground | — | |
| W23 | SP-0V-1 | PROTEUS-White35-8 | 0.5 | no route | Sensor ground | — | |
| W24 | OEM-2-I | PROTEUS-White35-10 | 0.5 | no route | +5V sensor supply | — | |
| W25 | OEM-2-J | PROTEUS-Black23-5 | 0.5 | no route | Crank position (CKP) | — | |
| W26 | SP-0V-1 | PROTEUS-Black23-13 | 0.5 | no route | VR 1 negative | — | |
| W27 | OEM-2-H | PROTEUS-Black23-1 | 0.5 | no route | Cam position (CMP) | — | |
| W28 | OEM-2-F | PROTEUS-White35-34 | 0.5 | no route | Knock sensor | — | |
| W29 | OEM-3-G | PROTEUS-Black35-35 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W30 | OEM-3-H | PROTEUS-Black35-34 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W31 | OEM-3-W | PROTEUS-Black35-3 | 0.5 | no route | Injector 1 | — | |
| W32 | OEM-3-X | PROTEUS-Black35-15 | 0.5 | no route | Injector 2 | — | |
| W33 | OEM-3-Y | PROTEUS-Black35-4 | 0.5 | no route | Injector 3 | — | |
| W34 | OEM-3-Z | PROTEUS-Black35-16 | 0.5 | no route | Injector 4 | — | |
| W35 | OEM-1-I | PROTEUS-Black35-20 | 0.5 | no route | Condenser fan relay | — | |
| W36 | OEM-1-R | PROTEUS-Black35-9 | 0.5 | no route | Cooling fan relay | — | |
| W37 | OEM-1-S | PROTEUS-Black35-21 | 0.5 | no route | A/C clutch relay | — | |
| W38 | OEM-3-N | PROTEUS-Black35-10 | 0.5 | no route | Fuel pump relay | — | |
| W39 | OEM-1-U | PROTEUS-Black35-11 | 0.5 | no route | Front O2 heater | — | |
| W40 | OEM-3-V | PROTEUS-Black35-12 | 0.5 | no route | Rear O2 heater | — | |
| W41 | OEM-3-O | PROTEUS-Black35-23 | 0.5 | no route | ISC valve low side | — | |
| W42 | OEM-1-E | PROTEUS-Black35-5 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W43 | OEM-1-O | PROTEUS-Black35-6 | 0.5 | no route | Alternator control | — | |
| W44 | OEM-1-Q | PROTEUS-Black35-7 | 0.5 | no route | Charge lamp | — | |
| W45 | OEM-2-M | PROTEUS-Black35-19 | 0.5 | no route | EGR valve | — | |
| W46 | OEM-2-N | PROTEUS-Black35-8 | 0.5 | no route | EGR valve | — | |
| W47 | OEM-2-O | PROTEUS-Black23-6 | 0.5 | no route | EGR valve | — | |
| W48 | OEM-2-P | PROTEUS-Black23-7 | 0.5 | no route | EGR valve | — | |
| W49 | OEM-3-L | PROTEUS-Black23-15 | 0.5 | no route | Evap purge solenoid | — | |
| W50 | OEM-3-Q | PROTEUS-Black23-8 | 0.5 | no route | VICS solenoid (intake butterflies) | — | |
| W51 | OEM-2-L | PROTEUS-White35-13 | 0.5 | no route | Mass air flow (MAF) | — | |
| W52 | OEM-3-E | PROTEUS-White35-24 | 0.5 | no route | Throttle position (TPS) | — | |
| W53 | OEM-2-C | PROTEUS-White35-14 | 0.5 | no route | Front O2 signal | — | |
| W54 | OEM-3-J | PROTEUS-White35-25 | 0.5 | no route | Rear O2 signal | — | |
| W55 | OEM-2-E | PROTEUS-White35-20 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W56 | OEM-2-B | PROTEUS-White35-30 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W57 | OEM-2-A | PROTEUS-White35-15 | 0.5 | no route | Fuel tank pressure | — | |
| W58 | OEM-3-K | PROTEUS-White35-26 | 0.5 | no route | Fuel level | — | |
| W59 | OEM-3-S | PROTEUS-White35-16 | 0.5 | no route | EGR boost sensor | — | |
| W60 | OEM-2-D | PROTEUS-Black23-2 | 0.5 | no route | Vehicle speed | — | |
| W61 | OEM-1-F | PROTEUS-Black23-10 | 0.5 | no route | Brake switch | — | |
| W62 | OEM-1-G | PROTEUS-Black23-3 | 0.5 | no route | Power steering pressure switch | — | |
| W63 | OEM-1-P | PROTEUS-Black23-9 | 0.5 | no route | A/C request | — | |
| W64 | OEM-1-V | PROTEUS-Black23-11 | 0.5 | no route | Neutral switch | — | |
| W65 | OEM-3-I | PROTEUS-White35-27 | 0.5 | no route | Clutch 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 (12)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | NET_FAMILY | OEM-2-O ↔ PROTEUS-Black23-6 | OEM-2-O "EGR valve" [low_side_out] is wired to PROTEUS-Black23-6 "ETB 1 negative" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-2-P ↔ PROTEUS-Black23-7 | OEM-2-P "EGR valve" [low_side_out] is wired to PROTEUS-Black23-7 "ETB 1 positive" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-I ↔ PROTEUS-White35-27 | OEM-3-I "Clutch switch" [digital_in] is wired to PROTEUS-White35-27 "Analog Volt 8" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| warn | NET_FAMILY | OEM-3-L ↔ PROTEUS-Black23-15 | OEM-3-L "Evap purge solenoid" [low_side_out] is wired to PROTEUS-Black23-15 "ETB 2 positive" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-Q ↔ PROTEUS-Black23-8 | OEM-3-Q "VICS solenoid (intake butterflies)" [low_side_out] is wired to PROTEUS-Black23-8 "ETB 2 negative" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| info | NET_FAMILY | OEM-1-E ↔ PROTEUS-Black35-5 | OEM-1-E "Malfunction indicator lamp (MIL)" [low_side_out] is wired to PROTEUS-Black35-5 "Injector 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-1-O ↔ PROTEUS-Black35-6 | OEM-1-O "Alternator control" [low_side_out] is wired to PROTEUS-Black35-6 "Injector 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-1-Q ↔ PROTEUS-Black35-7 | OEM-1-Q "Charge lamp" [low_side_out] is wired to PROTEUS-Black35-7 "Injector 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-M ↔ PROTEUS-Black35-19 | OEM-2-M "EGR valve" [low_side_out] is wired to PROTEUS-Black35-19 "Injector 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-N ↔ PROTEUS-Black35-8 | OEM-2-N "EGR valve" [low_side_out] is wired to PROTEUS-Black35-8 "Injector 9" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | PROTEUS-White35-2 ↔ PROTEUS-Black23-13 | PROTEUS-White35-2 "Sensor ground" [sensor_ground] is wired to PROTEUS-Black23-13 "VR 1 negative" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | UNMAPPED | OEM | 3 optional OEM pins are not mapped: OEM-2-K Tachometer output; OEM-3-T EGR boost solenoid; OEM-3-U Canister drain cut valve (CDCV) |
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 2026-10-04. Review every wire against both manuals before building. Not wired: - OEM-1 A: Constant +12V: rusEFI Proteus has no battery-constant input; not needed - OEM-3 T: EGR boost solenoid: no free low_side/ls_hs/injector/hbridge on rusEFI Proteus - OEM-3 U: Canister drain cut valve (CDCV): no free low_side/ls_hs/injector/hbridge on rusEFI Proteus - OEM-2 K: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on rusEFI Proteus - PROTEUS-Black23 18: Ignition switch in: not fed (the stock ECU has no ignition-sense pin); feed it from a switched-ignition source
Sources
| Reliability | Kind | Title | URL |
|---|---|---|---|
| 4 | vendor_doc | Link G4X MX5NB1X install manual (NB1 1999-00) | https://linkecu.com/documentation/MX5XNB1.pdf |
| 4 | vendor_doc | rusEFI Proteus — board connector definitions (Black35 / White35 / Black23) | https://github.com/rusefi/rusefi/tree/master/firmware/config/boards/proteus/connectors |