can someone tell me how to stop low coolant light and buzzer from coming on. I replaced radiator and it doesnt have the top sensor for radiator now light stays on and hear buzzer from time to time. Thanks oh i have 85 rx7 with 12a engine

 

Just ground that wire or put 12+ to it (can't remember which one). Take a test light or a multimeter and see what that wire has, then connect it to the opposite polarity.