When I got my car the fuel guage and the temp guage didn't work at all. The previous owner had installed indiglo guages. I removed the indiglos and replaced the temp and fuel guages with some from my parts car, I know these worked before. Now the temp guage works fine, but the fuel guage is stuck on full instead of empty now. Regardless of whether the sending unit is plugged in or not. WTF? Anybody know what pins I should check for voltage or resistance, and the values? It's a 92 GS-R, I dont have a manual. Thanks.