[youngmanvr4]

When I traded my s13 for my s14 the fuel gauge never worked. I did tests and replace the fuel gauge in the cluster, did test and replaced the whole sending unit/float and nothing would fix it. Checked the connections, they were ok. So the last thing it could be was somewhere in the wiring something was messed up. I was just going to rewire it by running a wire from the back of the cluster back the the wire in the fuel tank but before I did I needed to unwind some of the black tape right where the wires come out of the fuel tank. As I was doing this I pulled the wire for the fuel gauge and a end pulled out. So I unwound it somemore and found some butt connectors. At one time all of those wires coming out of the tank were cut and then put back together using butt connectors but they didn't get the one for the fuel gauge clamped down enough and it came out.
Thats just my experience and I'm 99% sure thats not your problem...but just try different things and see what happens. Since you were just back there something probably got bumped or pulled out or something.
A good place for help is EL pages 74-78 on your s14 FSM. If you dont have a FSM get one and look there. Alot of good help on that.