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.
100%
Stock ECU being replaced
SPEEDUINO-A-16 Proto area 3 (fuel pump)
GND
SPEEDUINO-A-1 Injector 1
SPEEDUINO-A-29 Idle stepper 2B
SPEEDUINO-A-2 Injector 2
SPEEDUINO-A-30 Idle stepper 2A
0V sensor
SPEEDUINO-A-3 Injector 3
SPEEDUINO-A-31 Idle stepper 1A
0V sensor
SPEEDUINO-A-5 Injector 4
SPEEDUINO-A-32 Idle stepper 1B
GND
GND
OEM-A
Stock ECU being replaced
1HCooling fan relay (low speed)
1LPower ground
1QInjector 1 (front primary)
1SOMP stepper phase B2
1UInjector 2 (rear primary)
1WOMP stepper phase A2
1XSensor ground
1YInjector 3 (front secondary)
1AAOMP stepper phase B1
1ABSensor ground
1ACInjector 4 (rear secondary)
1AEOMP stepper phase A1
1AFPower ground
1AJPower ground
OEM-B
Stock ECU being replaced
5V ref
SPEEDUINO-A-21 O2 sensor
SPEEDUINO-A-22 TPS input
SPEEDUINO-A-25 Crank input / VR1+
0V sensor
SPEEDUINO-A-20 Inlet air temp (IAT)
SPEEDUINO-A-24 Cam input / VR2+
SPEEDUINO-A-19 Coolant temp (CLT)
0V sensor
OEM-C
Stock ECU being replaced
3A+5V sensor supply
3DO2 sensor (narrowband)
3IThrottle position (TPS, full range)
3RCrank position (CAS NE)
3SSensor ground (CAS)
3TIntake air temperature (IAT)
3UHome position (CAS G)
3WCoolant temperature (ECT)
3ABSensor ground
SPEEDUINO-A-15 Proto area 2 (fan)
SPEEDUINO-A-36 Idle 2 (3-wire idle)
SPEEDUINO-A-35 Boost
SPEEDUINO-A-37 PWM idle
SPEEDUINO-A-38 VVT
SPEEDUINO-A-17 Proto area 4 (tachometer)
SPEEDUINO-A-14 Proto area 1 (flex fuel)
SPEEDUINO-A-18 Proto area 5 (clutch)
SPEEDUINO-A-7 Ignition 1
SPEEDUINO-A-11 MAP sensor (0-5V)
SPEEDUINO-A-34 Ignition 2
SPEEDUINO-A-33 Ignition 3
OEM-D
Stock ECU being replaced
4DAir pump clutch relay
4FFuel pump speed relay
4GFuel pump relay
4IA/C relay
4KCooling fan relay (low speed)
4MTachometer output
4QVehicle speed sensor
4AABrake pedal switch
4AFIgnition front trailing
4AHMAP sensor (PIM)
4AJIgnition rear trailing
4ANIgnition leading (wasted spark)
SPEEDUINO
SPEEDUINO-A
SPEEDUINO
1Injector 1
2Injector 2
3Injector 3
5Injector 4
7Ignition 1
9Ground
10Ground
11MAP sensor (0-5V)
12Ground
135V
14Proto area 1 (flex fuel)
15Proto area 2 (fan)
16Proto area 3 (fuel pump)
17Proto area 4 (tachometer)
18Proto area 5 (clutch)
19Coolant temp (CLT)
20Inlet air temp (IAT)
21O2 sensor
22TPS input
23Ground
24Cam input / VR2+
25Crank input / VR1+
29Idle stepper 2B
30Idle stepper 2A
31Idle stepper 1A
32Idle stepper 1B
33Ignition 3
34Ignition 2
35Boost
36Idle 2 (3-wire idle)
37PWM idle
38VVT
OEM-A-1Q Injector 1 (front primary)
OEM-A-1U Injector 2 (rear primary)
OEM-A-1Y Injector 3 (front secondary)
OEM-A-1AC Injector 4 (rear secondary)
OEM-D-4AF Ignition front trailing
GND
GND
OEM-D-4AH MAP sensor (PIM)
0V sensor
5V ref
OEM-D-4Q Vehicle speed sensor
OEM-D-4D Air pump clutch relay
OEM-A-1H Cooling fan relay (low speed)
OEM-D-4M Tachometer output
OEM-D-4AA Brake pedal switch
OEM-C-3W Coolant temperature (ECT)
OEM-C-3T Intake air temperature (IAT)
OEM-C-3D O2 sensor (narrowband)
OEM-C-3I Throttle position (TPS, full range)
0V sensor
OEM-C-3U Home position (CAS G)
OEM-C-3R Crank position (CAS NE)
OEM-A-1S OMP stepper phase B2
OEM-A-1W OMP stepper phase A2
OEM-A-1AA OMP stepper phase B1
OEM-A-1AE OMP stepper phase A1
OEM-D-4AN Ignition leading (wasted spark)
OEM-D-4AJ Ignition rear trailing
OEM-D-4G Fuel pump relay
OEM-D-4F Fuel pump speed relay
OEM-D-4I A/C relay
OEM-D-4K Cooling fan relay (low speed)
SP-GND · 6 pins
SP-0V · 7 pins
Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.
39 / 39 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
| Wire | From | To | Signal | Gauge | Colour | Stripe | Ident | Flags | |
|---|---|---|---|---|---|---|---|---|---|
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — |