Hey guys.

I've got a 92 Loyale I've been rebuilding, and I think I've got everything squared away but one thing is still bothering me: the fuel gauge doesn't function. It always shows empty. I could track my mileage, and I've had to do that before in another vehicle, but I like everything to work. 

I really don't know much about how to go about this. I know there's the access panel under the carpet in the back, but beyond that I'm not sure how to proceed in an efficient and logical way. 

The two wires under the access panel are corroded as hell. So I'm going to clean that all up. I really hope it's not the sending unit, I really don't want to have to try a chase down a new or aftermarket one!

Any thoughts guys? Thanks 

I have not had to troubleshoot one, but yeah, check those connections.  Measure the voltage from each to the body, and across the 2.  The car will have to be on to get meaningful readings. 

Any idea what the voltages should be? If I am getting proper power to the unit, then that proves a bad sending unit right?