just got a new car and the needle for the temp gauge is broken. i went out an bought an aftermarket electric water temp gauge but the damn thing has no instructions. i searched and found nothing that helped. all it came with was a fitting a little thermostate looking thing and thats it. no wire nothing, how do i hook it up?????? also the back of the gauge just has 3 little bolts coming out of it. one says S the other + and the other -. what are these for?
