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
M800-A-18 AUX1
M800-A-1 AUX2
M800-B-9 Digital Input 2
M800-A-32 AUX6
M800-A-23 AUX3
M800-B-10 Digital Input 3
M800-B-11 Digital Input 4
M800-B-8 Digital Input 1
M800-B-22 AV8
M800-A-24 AUX4
OEM-1
Stock ECU being replaced
ACooling fan relay (low-side)
BA/C condenser fan relay
CStarter input (12V while cranking)
ECheck engine light (MIL)
GA/C clutch relay
KA/C pressure switch (A/C request)
LClutch switch
MVehicle speed sensor (VSS)
QBrake switch
UFuel pump relay (low-side)
M800-A-15 Analog Voltage Input 2
M800-A-25 Analog Voltage Input 5
M800-B-20 Analog Voltage Input 6
M800-A-14 AV1
M800-B-3 Analog Temperature Input 1
M800-A-16 Analog Voltage Input 3
5V ref
M800-B-21 AV7
M800-B-4 Analog Temperature Input 2
M800-A-31 AUX5
M800-A-17 Analog Voltage Input 4
0V sensor
OEM-3
Stock ECU being replaced
BMAF sensor input
CFront O2 sensor input
DRear O2 sensor input
FThrottle position (TPS)
GEngine coolant temp (CLT)
HEGR boost sensor
I+5V sensor reference
JEGR valve position sensor
KIntake air temp (IAT)
MFront O2 heater control
NEGR boost sensor (2nd channel)
OSensor ground
GND
ECU power +12V (main relay)
GND
GND
M800-B-1 Crank Reference Timing Input
M800-B-2 Cam Sync Timing Input
0V sensor
M800-A-33 AUX7
GND
M800-A-3 IGN1
M800-A-34 AUX8
M800-A-27 INJ5
M800-A-28 INJ6
M800-A-4 IGN2
M800-A-29 INJ7
M800-A-19 INJ1
M800-A-20 INJ2
M800-A-21 INJ3
M800-A-22 INJ4
OEM-4
Stock ECU being replaced
AChassis ground
BECU power +12V (main relay)
CChassis ground
DChassis ground
ECrank position (CKP) sensor
GCAS SGC (cam sync)
HCrank pickup timing ground (CKP gnd)
JPRC solenoid (FPR control)
KChassis ground
NIgnition coil trigger (cyl 1&4)
OEGR vent solenoid
PEGR vacuum solenoid
QIdle air control (IAC) valve
RIgnition coil trigger (cyl 2&3)
TEVAP purge solenoid
UInjector 1 (cyl 1)
VInjector 2 (cyl 2)
WInjector 3 (cyl 3)
XInjector 4 (cyl 4)
M800
M800-A
M800
1AUX2
25V Engine Sensor Supply
3IGN1
4IGN2
10GND Battery Negative
11GND Battery Negative
14AV1
15Analog Voltage Input 2
16Analog Voltage Input 3
17Analog Voltage Input 4
18AUX1
19INJ1
20INJ2
21INJ3
22INJ4
23AUX3
24AUX4
25Analog Voltage Input 5
26VBAT Battery Positive
27INJ5
28INJ6
29INJ7
31AUX5
32AUX6
33AUX7
34AUX8
OEM-1-B A/C condenser fan relay
5V ref
OEM-4-N Ignition coil trigger (cyl 1&4)
OEM-4-R Ignition coil trigger (cyl 2&3)
GND
GND
OEM-3-F Throttle position (TPS)
OEM-3-B MAF sensor input
OEM-3-H EGR boost sensor
OEM-3-N EGR boost sensor (2nd channel)
OEM-1-A Cooling fan relay (low-side)
OEM-4-U Injector 1 (cyl 1)
OEM-4-V Injector 2 (cyl 2)
OEM-4-W Injector 3 (cyl 3)
OEM-4-X Injector 4 (cyl 4)
OEM-1-G A/C clutch relay
OEM-1-U Fuel pump relay (low-side)
OEM-3-C Front O2 sensor input
VBAT Battery Positive
OEM-4-P EGR vacuum solenoid
OEM-4-Q Idle air control (IAC) valve
OEM-4-T EVAP purge solenoid
OEM-3-M Front O2 heater control
OEM-1-E Check engine light (MIL)
OEM-4-J PRC solenoid (FPR control)
OEM-4-O EGR vent solenoid
M800-B
M800
1Crank Reference Timing Input
2Cam Sync Timing Input
3Analog Temperature Input 1
4Analog Temperature Input 2
8Digital Input 1
9Digital Input 2
10Digital Input 3
11Digital Input 4
140V Comms Reference
150V Auxiliary Sensor Supply
160V Engine Sensor Supply
20Analog Voltage Input 6
21AV7
22AV8
OEM-4-E Crank position (CKP) sensor
OEM-4-G CAS SGC (cam sync)
OEM-3-G Engine coolant temp (CLT)
OEM-3-K Intake air temp (IAT)
OEM-1-M Vehicle speed sensor (VSS)
OEM-1-C Starter input (12V while cranking)
OEM-1-K A/C pressure switch (A/C request)
OEM-1-L Clutch switch
0V sensor
0V sensor
0V sensor
OEM-3-D Rear O2 sensor input
OEM-3-J EGR valve position sensor
OEM-1-Q Brake switch
SP-GND · 7 pins
SP-14V · 3 pins
SP-0V · 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.
47 / 47 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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