Another question now that i have a forum of experts, my temp gauge in my 4x4 hasn't worked since i got it. If i connect the terminal to the sensor in the head, the gauge just buries itself past 260. I tried another gauge, same thing. I also bought a new temp sensor, connected the wire to it, and dumped it in a cup of hot water, still buried. What gives? people tell me its grounded somewhere but i've followed the wire most of the way and it seems okay. Any ideas? truck again is a 86 silverado 4x4, no cpu.