I am trying to figure out what the ground point is for the fuel gauge sender on my 95 Windstar. Here is my dilemma. For years this gauge has behaved erratically. It either shows the correct fuel level or drifts to empty. I've disconnected the harness at the fuel tank to diagnose this problem, expecting the gauge to show empty when I throw the key. Instead, it shoots to "full" without me grounding the wire. Now I suspect I have a short, and am preparing to trace the wire back to the front of the van looking for a worn harness. I don't understand though, why, if I have a short circuit, the fuel gauge works at all? Have any of you witnessed this sort of trouble before? Please Help.