Not running fiero ECU; relocating the new one. For this, I don't need any of the. C1 or C2 pinouts. I do however, need to know what these correlate to so notably, I can start the car. Its the connector that goes under the arm rest from the front to the back.

That's C203... for some reason there's no pinout in the Service Manual.

C203 pinout

Thanks. So ideally I can hook the (large) purple wire that comes out of the C500 side of the connector to my starter solenoid and all shall be good?

Also, do we have dual speed fans? If so, where's the high speed fan control?


Only other things I will need:

Armrest (203 Side)

IGN: (Pink/wht) to go to an IGN relay I'm mounting in the back that will turn on/power my injectors, O2s, and ECU.

CES: (black/wht) to ecu

Speedo: (BRN) Coming from my arduino thats converting the pwm to a sin wave.

Engine bay (c500 side)

Green and blue; connect to reverse light switch on trans (F40)
White: Tach
Green/wht: Low speed fan control (hook to ECU)
...and the green ground.

BTW, I hate wiring....

*SOME* '88's had dual speed fans... I'm not sure what option package carried that.

quote Originally posted by Will: What engine are you swapping? GM had separate fuses for the injectors and the ECU.

LFX. I picked up an aftermarket fuse/relay box and am installing that.