4Pin Auto Starter Relay 12V DC 500 Amp Vehicle SPST Contactor Double Batteries Isolator Control On/Off Switch, Heavy Duty, High Current, with Connection Accessory

RV vehicle/house battery separator. Must use 2nd small post to ground. Solid.

Have an installer yet but I will be using it to power electric winch on my truck.

Great product

I've had this part installed for exactly three days. It has only been under very light load (less than 20 amps), and now it is sticking. It will not release when voltage is removed from the coil. Don't waste your money on this cheap imported junk!

Worked perfectly for hooking up accessories on UTV.

Good product . Exact description.

Well made and functions well. However, this is not for continuous duty. The primary coil draws enough power to get very hot. After about an hour of "on time" this housing is too hot to touch. This would be fine for intermittent duty but do not use it as a battery isolator! I wasted $25.

It cuts the current to my starting battery after engaging the starter, takes 3 or 4 attempts to start my truck now. Im not sure what is causing it. When disconnected truck starts fine