I have(had) a 91 RS with a v6. I put a 350 TPI in it. The engine + wiring harness + CPU is from an 87.

Heres my situation I am so close I have 3 wires left! and just cant seem to figure this last thing out. I turn the key and the engine turns over wants to start but does not stay on(not sure if its because power going to computer or something). The fuel pump does not turn on by key.

I am using the bulkhead connector from my 91 and just cuttin the bulkhead off the 87 and putting it to the matching wires from the 91 Bulkhead. These are the few wires I have left. And The problem I am having is the fact that the fuel pump will not turn on by key, it turns on when i connect direct hot to the (G4-GRY wire) on the bulkhead. So i know the fuel pump works but where do i have to run the GRY wire to on the 87 Wiring Harness. Also what wire controls spark?? Oh and is the v6 Fuel pump good enough for the V8 fuel pump?

91 Bulkhead Wires
G4- Fuel Pump(Gry)
A7- Emissions Control(PNK/BLK)(???? is this even needed????)

87 Bulkhead Wire
G7- Computer Command Control(???? is this even needed????)

I will be checking my messages tonight(Nov 9th) and early tomorrow (Nov 10th) around 4:30-5:30a.m. after that I wont be home until either saturday or sunday, the car is at a guys house that i work with, i will be there working on it and finishing up odds and ends, if you figure something out or have any input/tips after Late nov 9th early nov 10th. i would really appreciate it if you could give me a call my # is 1-860-268-4007, i work 6-2:30, during the day i can answer the phone sometimes depending on how busy i am, if i dont answer just drop a message and i will call you back
thanks!
Thomas

 

Pink/Black is typically key switched power.
Not sure how the 6 cyl did the fuel pump power.
Go to town on these wire diagrams:

http://www.autozone.com/servlet/UiBr...3d80163fb5.jsp