I have a 97 LT1 in my 86 Camaro that isn't getting fuel. If I put power to the relay it closes and starts the pump. I have read many posts and thought the green/white wire from C220 lable fuel pump relay control was the right wire, but with the ingnition on it does not have power. Before I tear the harness apart to follow the wire back and check its continuity could someone confirm that this green/white wire is the "trigger" that will close the relay.

 

Don't know if i will be much help, but i have a thread on this, yours being 86 i doubt it, but here is my wiring thread, post #20.

https://www.thirdgen.org/forums/ltx-...stock-lt1.html




c100
PIN A-Power feed from injector fuse 9 going to a switched 12v source
PIN G-Power feed from ignition fuse 11 to a switched 12v source
PIN K-Power feed from injector fuse 10 to a switched 12v source

c105
Power feed from Fuse #10
(injectors 1995/eng sensor 96-97)

c210
PIN A-Starter 12v source to B4 C100 Starter wire(purple)


C220
PIN J-Fuel Pump Relay Control to G4 of c100 Fuel Control gray wire


C230
PIN G-Power feed from ecm ign fuse 5 to switched 12v

 

The green/white relay trigger wire from the LT PCM sends a ground signal to the relay, not a 12v. That being said, just be sure the fuel pump relay you are using is a "ground triggered" relay.