‘66 Barracuda Fuel Gauge Pegged!

Well, totally bummed out!!! I have everything together, although the temp gauge is cooked (still trying to find a replacement). Cluster is back in the dash and also attached an auxiliary ground from the pot metal cluster to the dashboard. I also bought brand new circuit boards and installed.

As stated and shown in post#13, the fuel gauge was tested and working with the cheapie Chinese sender on my bench. But now back in the car, I turn on the ignition and the gauge goes full peg!

I know somewhere, a wire has to be grounding, but I don’t know how to check it. Seems to me with a test light or an ohm meter, I am always going to find continuity, so that test doesn’t make sense to me. And visually checking, I see no problems.

I spent over an hour on YouTube but only see generic ways of testing. With my test light, I See I have current at the fuel sender wire, and have current at the fuse box.