This relay kit allows you to connect two batteries to your electrical system to handle the extra strain from adding off road equipment like a winch, an air compressor, fog lights or even that stereo system.
This kit includes the solenoid, a three position switch, battery cables, jumper cable, wiring harness and hardware. The three position switch allows you to manage the batteries through the use of the solenoid. Position one is the factory single battery mode. Position two uses the main battery, but charges both batteries. Position three allows both batteries to be used for winches or to crank the vehicle if the main battery is dead.

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