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
ECU power (+B2, main relay)
KV8-C-31 Digital in 5
GND
KV8-C-32 Digital in 6
KV8-C-12 Analog in 11
KV8-C-10 Analog in 9
KV8-C-27 Digital in 1
KV8-C-28 Digital in 2
KV8-C-29 Digital in 3
KV8-C-30 Digital in 4
KV8-D-14 CAN 1 L
KV8-D-8 CAN 1 H
KV8-B-16 Aux 7
KV8-C-2 Analog in 1
KV8-D-15 Ignition switch input
KV8-D-13 Shield (crank/cam/knock) (via SP-SHD)
0V sensor
OEM-A33
Stock ECU being replaced
1ECU power (+B2, main relay)
3Stop light switch (ST1-)
4Power ground (EC)
7Stop light switch (STP)
8A/C pressure sensor (ACP)
12Intake air temperature (THA, in MAF)
14Starter signal (STSW2)
15Clutch switch (CLSW)
16Neutral switch (NSW)
17Starter signal (STSW2)
18CAN low (CANL)
19CAN high (CANH)
20Blower relay (HB)
22Mass air flow (VG)
27Ignition switch sense (IGSW, IG2 relay)
28Shield ground (SLE2)
29MAF sensor ground (E2G)
GND
GND
GND
KV8-A-10 Lambda 1 heater −
ECU power (+B, main relay)
KV8-C-15 Analog in 14
KV8-C-13 Analog in 12
KV8-B-23 Aux 14
KV8-D-6 Sync sensor +
KV8-D-4 Crank index sensor +
KV8-D-17 Knock 2 +
KV8-C-3 Analog in 2
KV8-C-8 Analog in 7
0V sensor
KV8-D-11 Knock 1 +
KV8-D-13 Shield (crank/cam/knock) (via SP-SHD)
KV8-D-13 Shield (crank/cam/knock) (via SP-SHD)
KV8-C-14 Analog in 13
KV8-B-24 Aux 15
5V ref
KV8-D-13 Shield (crank/cam/knock) (via SP-SHD)
OEM-A34
Stock ECU being replaced
1Power ground (E03)
2Power ground (E04)
3Power ground (E05)
5A/F ratio sensor heater (HA1A)
6ECU power (+B, main relay)
9Fuel pressure sensor (PR)
11DI injector confirmation (IJF1)
13High-pressure fuel pump spill valve (FPF)
14VVT cam sensor exhaust bank 1 (EV1+)
16Crank position (NE+)
17Knock sensor 2 (KNK2)
20Manifold absolute pressure (PIM)
21Heated oxygen sensor (OX1B, rear)
27Crank position return (NE-)
28Knock sensor 1 (KNK1)
29Shield ground (EKNK)
30Shield ground (SLE1)
31DI injector confirmation (IJF2)
32High-pressure fuel pump spill valve (FPD)
34OCV power source (VCV, 5V)
35Shield ground (SLE3)
KV8-B-25 Aux 16
KV8-B-11 Aux 2
KV8-B-12 Aux 3
KV8-C-16 Analog in 15
KV8-B-15 Aux 6
KV8-B-14 Aux 5
KV8-D-9 EFI relay output (low side, 200 mA)
KV8-B-17 Aux 8
KV8-C-24 Analog in 16
5V ref
5V ref
KV8-C-6 Analog in 5
KV8-C-33 Digital in 7
0V sensor
0V sensor
KV8-C-4 Analog in 3
KV8-B-10 Aux 1
OEM-A35
Stock ECU being replaced
1Canister vent valve (VPMP)
5Injector relay (IREL)
7ETCS relay (+BM)
10Fuel pump control monitor (DI)
11Cooling fan relay 3 (FAN1)
12Cooling fan relay 2 (FAN2)
13EFI main relay 1 (SSHUT)
17ETCS relay (MCR)
20Canister pressure sensor (PPMP)
21Accelerator pedal 5V supply (VCPA)
22Accelerator pedal 5V supply (VCP2)
23Accelerator pedal position (VPA)
26Starter signal (STA)
29Accelerator pedal ground (EPA)
30Accelerator pedal ground (EPA2)
31Accelerator pedal position 2 (VPA2)
35A/C clutch relay (AC)
KV8-B-18 Aux 9
KV8-B-19 Aux 10
GND
GND
KV8-B-22 Aux 13
KV8-A-11 Lambda 2 heater −
KV8-B-20 Aux 11
KV8-B-29 Ignition 4
KV8-B-27 Ignition 2
KV8-B-1 Injection 1
KV8-B-7 Injection 7
KV8-B-2 Injection 2
KV8-B-21 Aux 12
KV8-B-13 Aux 4
KV8-C-7 Analog in 6
5V ref
KV8-C-11 Analog in 10
KV8-B-26 Ignition 1
KV8-B-3 Injection 3
KV8-B-8 Injection 8
KV8-B-5 Injection 5
KV8-B-4 Injection 4
KV8-C-5 Analog in 4
0V sensor
KV8-C-9 Analog in 8
KV8-B-28 Ignition 3
KV8-B-6 Injection 6
OEM-A36
Stock ECU being replaced
1Throttle actuator motor - (M-)
2Throttle actuator motor + (M+)
3Power ground (E02)
4Power ground (E01)
5OCV exhaust bank 2 (OE2)
6Heated oxygen sensor heater (HT1B)
7OCV exhaust bank 1 (OE1)
8Ignition coil 4 (IGT4)
10Ignition coil 2 (IGT2)
12Injector 1 port (#10)
13Injector 4 port (#40)
14Injector 1 direct (#1)
16OCV intake bank 2 (OC2)
17OCV intake bank 1 (OC1)
18Throttle position (VTA1)
19Sensor 5V supply (VC)
20Oil temperature (OT)
21Ignition coil 1 (IGT1)
22Injector 2 port (#20)
23Injector 4 direct (#4)
24Injector 3 direct (#3)
25Injector 2 direct (#2)
28Throttle position 2 (VTA2)
29Sensor ground (E1)
30Engine coolant temperature (THW)
31Ignition coil 3 (IGT3)
32Injector 3 port (#30)
KV8
KV8-A
KV8
10Lambda 1 heater −
11Lambda 2 heater −
OEM-A34-5 A/F ratio sensor heater (HA1A)
OEM-A36-6 Heated oxygen sensor heater (HT1B)
KV8-B
KV8
1Injection 1
2Injection 2
3Injection 3
4Injection 4
5Injection 5
6Injection 6
7Injection 7
8Injection 8
9ECU ground
10Aux 1
11Aux 2
12Aux 3
13Aux 4
14Aux 5
15Aux 6
16Aux 7
17Aux 8
18Aux 9
19Aux 10
20Aux 11
21Aux 12
22Aux 13
23Aux 14
24Aux 15
25Aux 16
26Ignition 1
27Ignition 2
28Ignition 3
29Ignition 4
34ECU ground
OEM-A36-12 Injector 1 port (#10)
OEM-A36-14 Injector 1 direct (#1)
OEM-A36-22 Injector 2 port (#20)
OEM-A36-25 Injector 2 direct (#2)
OEM-A36-24 Injector 3 direct (#3)
OEM-A36-32 Injector 3 port (#30)
OEM-A36-13 Injector 4 port (#40)
OEM-A36-23 Injector 4 direct (#4)
GND
OEM-A35-35 A/C clutch relay (AC)
OEM-A35-5 Injector relay (IREL)
OEM-A35-7 ETCS relay (+BM)
OEM-A36-17 OCV intake bank 1 (OC1)
OEM-A35-12 Cooling fan relay 2 (FAN2)
OEM-A35-11 Cooling fan relay 3 (FAN1)
OEM-A33-20 Blower relay (HB)
OEM-A35-17 ETCS relay (MCR)
OEM-A36-1 Throttle actuator motor - (M-)
OEM-A36-2 Throttle actuator motor + (M+)
OEM-A36-7 OCV exhaust bank 1 (OE1)
OEM-A36-16 OCV intake bank 2 (OC2)
OEM-A36-5 OCV exhaust bank 2 (OE2)
OEM-A34-13 High-pressure fuel pump spill valve (FPF)
OEM-A34-32 High-pressure fuel pump spill valve (FPD)
OEM-A35-1 Canister vent valve (VPMP)
OEM-A36-21 Ignition coil 1 (IGT1)
OEM-A36-10 Ignition coil 2 (IGT2)
OEM-A36-31 Ignition coil 3 (IGT3)
OEM-A36-8 Ignition coil 4 (IGT4)
GND
KV8-C
KV8
1ECU ground
2Analog in 1
3Analog in 2
4Analog in 3
5Analog in 4
6Analog in 5
7Analog in 6
8Analog in 7
9Analog in 8
10Analog in 9
11Analog in 10
12Analog in 11
13Analog in 12
14Analog in 13
15Analog in 14
16Analog in 15
17Analog sensor 0V reference
24Analog in 16
25Analog sensor 0V reference
26ECU ground
27Digital in 1
28Digital in 2
29Digital in 3
30Digital in 4
31Digital in 5
32Digital in 6
33Digital in 7
GND
OEM-A33-22 Mass air flow (VG)
OEM-A34-20 Manifold absolute pressure (PIM)
OEM-A35-31 Accelerator pedal position 2 (VPA2)
OEM-A36-28 Throttle position 2 (VTA2)
OEM-A35-23 Accelerator pedal position (VPA)
OEM-A36-18 Throttle position (VTA1)
OEM-A34-21 Heated oxygen sensor (OX1B, rear)
OEM-A36-30 Engine coolant temperature (THW)
OEM-A33-12 Intake air temperature (THA, in MAF)
OEM-A36-20 Oil temperature (OT)
OEM-A33-8 A/C pressure sensor (ACP)
OEM-A34-11 DI injector confirmation (IJF1)
OEM-A34-31 DI injector confirmation (IJF2)
OEM-A34-9 Fuel pressure sensor (PR)
OEM-A35-10 Fuel pump control monitor (DI)
0V sensor
OEM-A35-20 Canister pressure sensor (PPMP)
0V sensor
GND
OEM-A33-14 Starter signal (STSW2)
OEM-A33-15 Clutch switch (CLSW)
OEM-A33-16 Neutral switch (NSW)
OEM-A33-17 Starter signal (STSW2)
OEM-A33-3 Stop light switch (ST1-)
OEM-A33-7 Stop light switch (STP)
OEM-A35-26 Starter signal (STA)
KV8-D
KV8
1ECU 14V supply
2Aux 13–16 14V supply
4Crank index sensor +
5Crank index sensor −
6Sync sensor +
7Sync sensor −
8CAN 1 H
9EFI relay output (low side, 200 mA)
11Knock 1 +
13Shield (crank/cam/knock)
14CAN 1 L
15Ignition switch input
17Knock 2 +
20Aux 9–12 14V supply
21Sensor supply Vref1 5.0V
ECU 14V supply
Aux 13–16 14V supply
OEM-A34-16 Crank position (NE+)
SP-0V · 5 pins
OEM-A34-14 VVT cam sensor exhaust bank 1 (EV1+)
SP-0V · 5 pins
OEM-A33-19 CAN high (CANH)
OEM-A35-13 EFI main relay 1 (SSHUT)
OEM-A34-28 Knock sensor 1 (KNK1)
SP-SHD · 4 pins
OEM-A33-18 CAN low (CANL)
OEM-A33-27 Ignition switch sense (IGSW, IG2 relay)
OEM-A34-17 Knock sensor 2 (KNK2)
Aux 9–12 14V supply
5V ref
SP-GND · 11 pins
SP-SHD · 6 pins
SP-14V · 6 pins
SP-0V · 10 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.
95 / 95 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
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