Charging a Trailer Battery From Vehicle Battery

Question:

Hi, I want to use a separate 12v battery in my Haulmark Edge trailer to power the lights and run my small winch when not attached to the tow vehicle. Am I just better off with a second junction box for non-towing needs, or can I share the juice somehow. Would be nice to charge the trailer battery when attached to the car kind of like the breakaway switch battery thanks

asked by: Mark E

Expert Reply:

You could power your trailer's 12V battery when attached to your 2007 Nissan Titan simply by running # 10-1-1 wire from the 12V accessory circuit of your trailer connector to the positive post of the trailer battery. This will provide your trailer battery with a maintenance charge

The winch should have a way to connect directly to the battery, and for the lights you can use the the aforementioned wire as well as butt connectors # 05732-2 to wire the lights to the trailer's positive terminal.

expert reply by: Kyle S