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How to Wire Battery in Snowmobile Trailer So Lights Are Powered Independently of Vehicle


Please provide a list of What I need to purchase to run my 7x23 enclosed snowmobile trailer interior/loading lights when my 2011 Ford F-150 is Turned off and/or disconnected? Where should I mount the deep cycle battery box? Where do I start?


Expert Reply:

Usually, you'd mount the battery to the trailer tongue, but given that your trailer has a v-nose with not much room, you might need to install it somewhere inside the trailer. From your photo, it's hard to determine if there's enough room on the trailer tongue for a battery.

I'd recommend using a battery box, but the size you need would depend on which battery you use. I'll link you to our selection of battery boxes, and you can match the size of the box to the dimensions of your battery.

You can run the 12-volt accessory power wire from your 7-way to the positive battery terminal to provide a trickle charge, if you wish. You'd ground the negative terminal to the trailer frame, and run the power supply for your lighting from the positive battery terminal. If my memory serves me correctly, the 12-volt accessory power from the 7-way on a Ford powers down when the ignition is shut off, but if it doesn't, you might consider installing a battery isolating solenoid like part # TR118665.

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expert reply by:
Mike L

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