|Originally posted by hinesb1890:|
So I just add a cross wire tapped into both? And I do or I don't cut the tan oil pressure sender wire?
The tan/wht wire that comes from the C203 connector and goes into the OE Fiero ECM harness travels out to the stock Fiero fuel pump relay and oil pressure sending unit. You can cut this wire inside the car and just wire the ECM up to the end that goes thru the C203 connector and into the chassis wiring harness. Doing this means you don't have to cut the tan/wht wire at the oil pressure sending unit.
The oil pressure sending unit has 3 wires. Orange, Tan, and Tan/wht. The TAN wire that comes out from the center terminal is for the oil pressure gauge on the dash. DO NOT cut this wire.
The Orange wire is 12v + battery power from the F.Pump fuse which is shared with the OE Fiero fuel pump relay via C203 terminal B. After you perform the hot wire fuel pump mod, you can just remove the F.Pump fuse from the fusebox if you aren't going to need power on this circuit for anything else since it will no longer be needed with the hot-wire fuel pump mod.
[This message has been edited by Darth Fiero (edited 10-24-2013).]