Greetings and TY for having me. I only recently joined and am hoping someone has greater knowledge than I.

I recently purchased and installed a restored instrument cluster - said to be compatible with '83 through '86 - for my '85 G30. The temp gauge was working on the original but is not working on the restored cluster.

The seller insists it bench tested just fine and instructed me to be sure to connect the wire from the temp sensor.

Well, when I removed the original, there was no wire specifically to the temp gauge. There was only the wiring harness and another 12V wire to a light bulb that presumably powers all of the light bulbs. But nothing directly to the temp gauge.

My question is, assuming the seller is correct and the temp gauge is functioning electronically, what could be the issue? Could there be a compatibility issue with my year of 1985?

Thank you in advance for any ideas you may have.

 

GM did like to change things here and there for no good reason.

If yours had no separate wire then it's probably different. The part number on the printed circuit would likely be different.

I might see if your seller would restore your cluster for you and take the incorrect one back.

 

Thanks for the reply. The seller has agreed to take the cluster in return. I'm just hoping that perhaps I could get it working rather than return...if possible.