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 +14V (main relay)
FT450-A-A6 Aux 4 (fuel pump / relays)
FT450-A-A3 Aux 1
FT450-A-A4 Aux 2
OEM-1
Stock ECU being replaced
BECU power +14V (main relay)
ICondenser fan relay
RCooling fan relay
SA/C clutch relay
FT450-A-A26 White input 7 (air temp)
FT450-A-A22 White input 3 (TPS)
FT450-A-A24 White input 5 (water temp)
FT450-A-A17 Phase input (cam)
5V ref
SP-0V · 2 pins
FT450-A-A20 White input 1
OEM-2
Stock ECU being replaced
BIntake air temperature (IAT)
CFront O2 signal
ECoolant temperature (ECT)
HCam position (CMP)
I+5V sensor supply
JCrank position (CKP)
LMass air flow (MAF)
GND
GND
GND
FT450-A-A21 White input 2
0V sensor
FT450-A-A8 Ignition 1
FT450-A-A9 Ignition 2
FT450-A-A25 White input 6 (fuel pressure)
ISC valve +14V feed
FT450-A-A5 Aux 3
FT450-A-A23 White input 4 (oil pressure)
FT450-A-A1 Injector 1 (Bank A)
FT450-A-A2 Injector 2 (Bank A)
FT450-A-A1 Injector 1 (Bank A)
FT450-A-A2 Injector 2 (Bank A)
OEM-3
Stock ECU being replaced
APower ground
BPower ground
CPower ground
EThrottle position (TPS)
FSignal ground
GIgnition 1 (coils 1+4, wasted spark)
HIgnition 2 (coils 2+3, wasted spark)
JRear O2 signal
MISC valve +14V feed
NFuel pump relay
SPressure sensor (Mazda: EGR boost sensor)
WInjector 1
XInjector 2
YInjector 3
ZInjector 4
FT450
FT450-A
FT450
A1Injector 1 (Bank A)
A2Injector 2 (Bank A)
A3Aux 1
A4Aux 2
A5Aux 3
A6Aux 4 (fuel pump / relays)
A7Power ground
A8Ignition 1
A9Ignition 2
A12Signal ground
A13+12V switched
A14+5V sensor supply
A17Phase input (cam)
A18RPM reference (crank -)
A20White input 1
A21White input 2
A22White input 3 (TPS)
A23White input 4 (oil pressure)
A24White input 5 (water temp)
A25White input 6 (fuel pressure)
A26White input 7 (air temp)
Injector 1 · 2 pins
Injector 4 · 2 pins
OEM-1-R Cooling fan relay
OEM-1-S A/C clutch relay
OEM-3-N Fuel pump relay
OEM-1-I Condenser fan relay
GND
OEM-3-G Ignition 1 (coils 1+4, wasted spark)
OEM-3-H Ignition 2 (coils 2+3, wasted spark)
0V sensor
+12V switched
5V ref
OEM-2-H Cam position (CMP)
SP-0V · 2 pins
OEM-2-L Mass air flow (MAF)
OEM-3-E Throttle position (TPS)
OEM-2-C Front O2 signal
OEM-3-S Pressure sensor (Mazda: EGR boost sensor)
OEM-2-E Coolant temperature (ECT)
OEM-3-J Rear O2 signal
OEM-2-B Intake air temperature (IAT)
SP-14V · 4 pins
SP-0V · 5 pins
SP-GND · 5 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.
30 / 30 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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