gauge cluster lights and fuel gauge

[hatzie]

Originally Posted by Hammered 77

Sorry for using the wrong terminology, the wire had melted thru the casing and stuck to the header. So would this have been an open short?

The Jacket melted. The wire was badly damaged if not severed (Open). Something insulated the wire from the headers enough to keep it from making a solid grounding contact (Short).

The fuel gauge sender runs from 0Ω E to @90Ω F + or - 3Ω. If the resistance on the sender side rises higher than 90Ω the needle will continue to rise corresponding to the resistance till the needle is pegged at roughly 3:00. I haven't tested the resistance that actually pegs the needle. Probably around 120Ω give or take 2-10Ω . From there to completely open ( ∞ Ω ) the needle will sit pegged at roughly 3:00.

If you don't believe me. Get some liquid electrical tape to repair the pinhole you are about to make. Then. Stick a pin through the sender wire and firmly ground it. The gauge will drop to E.