1986 Chevy P30 Motorhome Fuel Gauge Wiring

[bhfisher]

I change out the ignition switch on the old motorhome on my 1986 Fleetwood Bounder. This is a GM/Chevy P-30 truck chassis.

After I was done, I notice the fuel gauge now reads empty. Removing the sensing wire from the back of gauge makes it read full.

So, it appears I have a short towards the fuel sender somewhere. The wire is 'pink' at the gauge. I followed as far as I could towards the fuse block and then it disappears.

I don't if anyone has experience with this on a motorhome, but thought I'd ask anyways

Bart