Green89IROC305

Hey all,

I'm installing an 87 iroc body and TPI engine harness in a 91 Z28.

everything seems to be working except I get no power to pin D of the c207 connector for the fuel pump. On the body harness side of the connector is a brown 10 gauge wire and on the engine harness side of the connector is a 10 gauge Tan/why wire.

This wire Powers the fuel pump relay while ECM I believe switches the relay on but without power that relay does nothing.so I get no pump prime.

I'm having a hard time tracing the pin D brown wire back to its source of power. Any help would be appreciated. I think it goes to the injector to fuse at the Box supposedly but I can't seem to find continuity between that wire and the fuse box.

This could just be a misconnected wiring harness or something like that but I am at a loss presently.

I should be able to figure it out when I get the service manual books on Friday but in the hope of figuring out sooner I thought I'd reach out to the hive mind here at TGO.

Thanks.

Tuned Performance

iTrader: (92)

I think the power for the fuel pump relay is the red wire by the battery protected by a 20 amp fuse.
The splice also feeds the ops.

Green89IROC305

You were spot on Tuned Performance! Turns out I never hooked that circuit to power, so the entire engine was without power. Thanks!

Tuned Performance

iTrader: (92)

Glad you got it, hope you get the valvetrain figured out soon.

Green89IROC305

Aye. Just need to wait on a shop to have time for the valve train.

John in RI

iTrader: (167)

n/m