Before I try and get the sending unit out, I want to make sure the gauge works first. Any way to test it? I unplugged the wire going to the sending unit and tested it, one wire is reading 13-14v, the other wire is grounded. Gauge is just sitting on empty, never see it move, not even when starting the machine or turning key on. Cluster lights up and all buttons work. Temp gauge works also, hour meter works too. So any way just to test the gauge and see if I can get the needle to move or read full before I know it's the sending unit? Thanks