My 87 GTA no longer has ANY of the factory wiring in it (carb'd BBC, w/ ARC overhead wiring panel) but I would like to keep the stock insturment cluster instead of putting aftermarket gauges (oil/water/volts) in an akward spot inside the car.

I've seen several of the connector pin-out diagrams and wanted to know if I could just repin my cluster connectors for what I needed and run it stand-alone??

I've got all the POS wires and all the GND. All grey Inst. Light wires and the gauge sender wires. What else do I need? Am I forgetting something?

Also, I've seen C2, pin 13 listed as both POS and GND, which is it???

ANYONE????

Thanks!!

Don

 

I am not sure what they changed in 87 from 86, but when I had the LG4 carbed V8 and took out my ecm, all my gauges except for the speedo worked. that was an easy fix though since the speedo wires where in the ecm harness when I cut it, but I just found the 2 wires and hooked those back up and all my gauges worked.

My cluster wires went into the car through the firewall on the drivers side of the car, except for the speedo wires which were in the ecm harness bundle.

 

Well, the removed ecm w/ the rest of the chassis wiring is what I had and the cluster worked. Now, though, I'm removing ALL the wiring out of the car and only putting in the bare minimum. I need to know how to wire the cluster to work stand-alone. I.E. no chassis wiring and no ecm, no nothing. Just power/ground and the senders.

Thanks,

Don

 

Oh, ok.
You could always do this if you want,






We did this setup on my friends 82 Trans Am.

 

That's an option, but I'm specifically trying to avoid doing the aftermarket gauge thing. I want to keep it looking as factory as possible inside.

 

I have the dash wiring layout somewhere, I'll see if I can find it. It's somewhere on one of my computers.