ok so I picked up a serp. belt setup from a 2001 s-10 blazer and I am now working on installing it. I need to find out which wire goes where on the alt. plug. there is a red and a gray one should be a feeler wire (the one that tells it to turn on).Anyway I am not real sure which does what? I am also trying to figure out where the two hose that come out of the water pump go? heater? TIA.