Anyone here have a diagram of the fuel gauge circuit or know where it runs? My gauge is stuck on F. Even with the FSU unplugged. Its shorting somewhere. The sending unit is good and so is the gauge. I have the SU unplugged right now because if I plug it back in the short will blow my fuel gauge. I checked the #1 fuse under the dash and its not blown. I know which wires go back to the battery and cluster, but where does that yellow wire that runs underneath the trunk/on top of the fuel tank go? Any relays in this circuit? 