Keep It Clean's heavy duty 40-amp relays are the best choice for any type of 12-volt wiring project. The Single pole/Double throw relay will never get stuck or short out on you. Combine our heavy duty relays with our relay sockets, and you've just saved yourself hours of wiring time!
Terminal 86 (Black) To Ground
Terminal 85 (White) To your switched power source (Signal to turn relay on)
Terminal 87 (Yellow) To the accessory you want to turn on
Terminal 30 (Blue) To constant power source