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
Constant +12V
ECU power +14V (main relay)
M190-A-21 Digital Input 1
M190-B-a Low Side Injector 5
M190-C-16 Low Side Ignition 1
M190-C-8 Low Side Ignition 2
M190-A-2 Low Side Injector 2
M190-A-5 Low Side Injector 4
M190-C-25 Universal Digital Input 3
M190-A-14 Digital Input 2
M190-A-30 Digital Input 3
M190-A-37 Digital Input 4
M190-B-V Low Side Injector 2
M190-C-27 Universal Digital Input 4
OEM-1
Stock ECU being replaced
AConstant +12V
BECU power +14V (main relay)
CStart signal
EMalfunction indicator lamp (MIL)
GIgnition 1 (coils 1+4, wasted spark)
HIgnition 2 (coils 2+3, wasted spark)
JA/C relay
LCoolant fan relay
MVehicle speed
OStop light switch
PPower steering pressure switch
QA/C request
RCooling fan relay
VNeutral/clutch switch
GND
GND
0V sensor
0V sensor
M190-C-18 Universal Digital Input 1
0V sensor
M190-C-32 Universal Digital Input 2
5V ref
M190-B-S Low Side Injector 4
M190-C-36 Analogue Voltage Input 2
M190-A-7 Lambda Narrow Input 1
M190-C-42 Analogue Voltage Input 1
M190-C-39 Analogue Temperature Input 2
M190-C-37 Analogue Temperature Input 1
M190-A-40 Low Side Injector 6
M190-A-1 Low Side Injector 3
M190-B-b Low Side Injector 3
M190-A-11 Peak Hold Injector 1
M190-A-3 Low Side Injector 1
M190-A-48 Low Side Injector 5
M190-B-T Low Side Injector 6
M190-B-U Low Side Injector 1
M190-A-12 Peak Hold Injector 2
OEM-2
Stock ECU being replaced
APower ground
BPower ground
CSensor ground (E2)
DSensor ground (E2)
ECrank position (CAS NE)
FMAF ground
GCam position (CAS G)
K+5V sensor supply
LRear defroster relay
MThrottle position (TPS)
NO2 sensor
OMass air flow (MAF)
PIntake air temperature (IAT)
QCoolant temperature (ECT)
RPRC solenoid (fuel pressure regulator)
SCondenser fan relay
TFuel pump relay
UInjector 1
VInjector 2
WISC solenoid
XEvap purge solenoid
YInjector 3
ZInjector 4
M190
M190-A
M190
1Low Side Injector 3
2Low Side Injector 2
3Low Side Injector 1
5Low Side Injector 4
7Lambda Narrow Input 1
11Peak Hold Injector 1
12Peak Hold Injector 2
14Digital Input 2
16Sensor 5.0V C3
18Sensor 0V C1
19Sensor 0V C2
20Sensor 0V C3
21Digital Input 1
30Digital Input 3
37Digital Input 4
38Battery Backup
40Low Side Injector 6
48Low Side Injector 5
OEM-2-S Condenser fan relay
OEM-1-J A/C relay
OEM-2-V Injector 2
OEM-1-L Coolant fan relay
OEM-2-N O2 sensor
OEM-2-U Injector 1
OEM-2-Z Injector 4
OEM-1-O Stop light switch
5V ref
0V sensor
0V sensor
0V sensor
OEM-1-C Start signal
OEM-1-P Power steering pressure switch
OEM-1-Q A/C request
Battery Backup
OEM-2-R PRC solenoid (fuel pressure regulator)
OEM-2-W ISC solenoid
M190-B
M190
aLow Side Injector 5
bLow Side Injector 3
cBattery Negative 6
GBattery Negative 1
HBattery Positive 1
JBattery Positive 2
KBattery Positive 3
LBattery Positive 4
SLow Side Injector 4
TLow Side Injector 6
ULow Side Injector 1
VLow Side Injector 2
WBattery Negative 2
XBattery Negative 3
YBattery Negative 4
ZBattery Negative 5
OEM-1-E Malfunction indicator lamp (MIL)
OEM-2-T Fuel pump relay
GND
GND
Battery Positive 1
Battery Positive 2
Battery Positive 3
Battery Positive 4
OEM-2-L Rear defroster relay
OEM-2-X Evap purge solenoid
OEM-2-Y Injector 3
OEM-1-R Cooling fan relay
GND
GND
GND
GND
M190-C
M190
8Low Side Ignition 2
14Sensor 0V A1
15Sensor 0V A2
16Low Side Ignition 1
18Universal Digital Input 1
23Sensor 0V B1
25Universal Digital Input 3
27Universal Digital Input 4
30Sensor 0V B2
32Universal Digital Input 2
36Analogue Voltage Input 2
37Analogue Temperature Input 1
39Analogue Temperature Input 2
42Analogue Voltage Input 1
OEM-1-H Ignition 2 (coils 2+3, wasted spark)
0V sensor
0V sensor
OEM-1-G Ignition 1 (coils 1+4, wasted spark)
OEM-2-E Crank position (CAS NE)
0V sensor
OEM-1-M Vehicle speed
OEM-1-V Neutral/clutch switch
0V sensor
OEM-2-G Cam position (CAS G)
OEM-2-M Throttle position (TPS)
OEM-2-Q Coolant temperature (ECT)
OEM-2-P Intake air temperature (IAT)
OEM-2-O Mass air flow (MAF)
SP-14V · 6 pins
SP-0V · 11 pins
SP-GND · 9 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.
54 / 54 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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