2G No gauge lighting, no fuel pump power.

[Jdalvarez117]

Alright, so I've run into an issue that I think I know the cause, I'm just unsure how to proceed from this point.

I've been working on swapping my 98 Spyder GS over to the 4g63t. I've got everything in place, however, I have no lighting on the Gauge cluster, and no power to the fuel pump. From my research, signs point to the MPI Relay. Now, going over my old engine harness, I found the plug for the relay near the ECU plugs, but on my current GST harness, there is no MPI plug. I'm guessing these MPI Relay deals are not on all of our cars?

I'm not sure where to go from here, not gonna lie. I could use some guidance.. thanks in advance!

 

[Janesfam]

Relays could be the problem. I’m assuming to double checked all your fuzes right?

 

[Jdalvarez117]

I did, nothing is burnt or broken as far as I can tell. Anything that I did find, was replaced.

 

[Janesfam]

It’s pretty bad luck to have two relays go out at the same time. Are you tracing power? Get a multi meter on the pump, then keep running it back till you don’t see any power. Or start at the other end and work your way to the pump to see where the power fails.
I see a lot of grounding issues on old cars too, check and or freshen your ground wire and see if that helps. Start with the trouble shooting that’s free