someone please help me identify these. am I correct in assuming that: this is the water temp sensor (its on the head, not the manifold) and this is the oil pressure sensor Am I mistaken in thinking that if I take out the water sensor that water will come rushing out of the cooling system???? what is the best thread sealant to use for the oil and water sensors? the instructions say teflon tape, but I'm skeptical.. on more thing, if I unhook those sensors with my current idiot light setup, shouldn't the lights come on?? they didn't, which scares me.. I need to get some those gauges in there fast.