I've been trying to get my fuel gauge to work reliably since I bought my 03 Larson 274 6 months ago. It works sometimes when on the trailer, but almost never when it's in the water. I replaced the gauge first, then the sender but it still doesn't work most of the time. The wiring that I can see looks fine. There are some spade connectors near the sender and a couple of ground wires. Any ideas?