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
GND
SPEEDUINO-A-20 Inlet air temp (IAT)
SPEEDUINO-A-18 Proto area 5 (clutch)
SPEEDUINO-A-35 Boost
0V sensor
OEM-A33
Stock ECU being replaced
4Power ground (EC)
12Intake air temperature (THA, in MAF)
14Starter signal (STSW2)
20Blower relay (HB)
29MAF sensor ground (E2G)
GND
GND
GND
SPEEDUINO-A-24 Cam input / VR2+
SPEEDUINO-A-25 Crank input / VR1+
SPEEDUINO-A-11 MAP sensor (0-5V)
SPEEDUINO-A-21 O2 sensor
SPEEDUINO-A-14 Proto area 1 (flex fuel)
SPEEDUINO-A-26 VR2-
0V sensor
5V ref
OEM-A34
Stock ECU being replaced
1Power ground (E03)
2Power ground (E04)
3Power ground (E05)
14VVT cam sensor exhaust bank 1 (EV1+)
16Crank position (NE+)
20Manifold absolute pressure (PIM)
21Heated oxygen sensor (OX1B, rear)
25VVT cam sensor exhaust bank 2 (EV2+)
26VVT cam sensor intake bank 1 (VV1+)
27Crank position return (NE-)
34OCV power source (VCV, 5V)
SPEEDUINO-A-29 Idle stepper 2B
SPEEDUINO-A-30 Idle stepper 2A
SPEEDUINO-A-36 Idle 2 (3-wire idle)
SPEEDUINO-A-15 Proto area 2 (fan)
SPEEDUINO-A-16 Proto area 3 (fuel pump)
SPEEDUINO-A-17 Proto area 4 (tachometer)
SPEEDUINO-A-37 PWM idle
5V ref
5V ref
0V sensor
0V sensor
SPEEDUINO-A-22 TPS input
SPEEDUINO-A-38 VVT
OEM-A35
Stock ECU being replaced
5Injector relay (IREL)
7ETCS relay (+BM)
11Cooling fan relay 3 (FAN1)
12Cooling fan relay 2 (FAN2)
13EFI main relay 1 (SSHUT)
15Tachometer output (TACH)
17ETCS relay (MCR)
21Accelerator pedal 5V supply (VCPA)
22Accelerator pedal 5V supply (VCP2)
29Accelerator pedal ground (EPA)
30Accelerator pedal ground (EPA2)
31Accelerator pedal position 2 (VPA2)
35A/C clutch relay (AC)
SPEEDUINO-A-31 Idle stepper 1A
SPEEDUINO-A-32 Idle stepper 1B
GND
GND
SPEEDUINO-A-8 Ignition 4
SPEEDUINO-A-34 Ignition 2
SPEEDUINO-A-1 Injector 1
SPEEDUINO-A-3 Injector 3
SPEEDUINO-A-2 Injector 2
5V ref
SPEEDUINO-A-7 Ignition 1
SPEEDUINO-A-3 Injector 3
SPEEDUINO-A-5 Injector 4
SPEEDUINO-A-1 Injector 1
SPEEDUINO-A-5 Injector 4
0V sensor
SPEEDUINO-A-19 Coolant temp (CLT)
SPEEDUINO-A-33 Ignition 3
SPEEDUINO-A-2 Injector 2
OEM-A36
Stock ECU being replaced
1Throttle actuator motor - (M-)
2Throttle actuator motor + (M+)
3Power ground (E02)
4Power ground (E01)
8Ignition coil 4 (IGT4)
10Ignition coil 2 (IGT2)
12Injector 1 port (#10)
13Injector 4 port (#40)
14Injector 1 direct (#1)
19Sensor 5V supply (VC)
21Ignition coil 1 (IGT1)
22Injector 2 port (#20)
23Injector 4 direct (#4)
24Injector 3 direct (#3)
25Injector 2 direct (#2)
29Sensor ground (E1)
30Engine coolant temperature (THW)
31Ignition coil 3 (IGT3)
32Injector 3 port (#30)
SPEEDUINO
SPEEDUINO-A
SPEEDUINO
1Injector 1
2Injector 2
3Injector 3
5Injector 4
7Ignition 1
8Ignition 4
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+
26VR2-
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
Injector 1 port (#10) · 2 pins
Injector 1 direct (#1) · 2 pins
Injector 2 port (#20) · 2 pins
Injector 4 direct (#4) · 2 pins
OEM-A36-21 Ignition coil 1 (IGT1)
OEM-A36-8 Ignition coil 4 (IGT4)
GND
GND
OEM-A34-20 Manifold absolute pressure (PIM)
0V sensor
5V ref
OEM-A34-25 VVT cam sensor exhaust bank 2 (EV2+)
OEM-A35-12 Cooling fan relay 2 (FAN2)
OEM-A35-13 EFI main relay 1 (SSHUT)
OEM-A35-15 Tachometer output (TACH)
OEM-A33-14 Starter signal (STSW2)
OEM-A36-30 Engine coolant temperature (THW)
OEM-A33-12 Intake air temperature (THA, in MAF)
OEM-A34-21 Heated oxygen sensor (OX1B, rear)
OEM-A35-31 Accelerator pedal position 2 (VPA2)
0V sensor
OEM-A34-14 VVT cam sensor exhaust bank 1 (EV1+)
OEM-A34-16 Crank position (NE+)
OEM-A34-26 VVT cam sensor intake bank 1 (VV1+)
OEM-A35-5 Injector relay (IREL)
OEM-A35-7 ETCS relay (+BM)
OEM-A36-1 Throttle actuator motor - (M-)
OEM-A36-2 Throttle actuator motor + (M+)
OEM-A36-31 Ignition coil 3 (IGT3)
OEM-A36-10 Ignition coil 2 (IGT2)
OEM-A33-20 Blower relay (HB)
OEM-A35-11 Cooling fan relay 3 (FAN1)
OEM-A35-17 ETCS relay (MCR)
OEM-A35-35 A/C clutch relay (AC)
SP-GND · 9 pins
SP-0V · 8 pins
SP-5V1 · 6 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.
53 / 53 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 | |
|---|---|---|---|---|---|---|---|---|---|
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — |