How Can Trailer Lighting be Powered From Onboard Battery and Tow Vehicle

Question

Question:

I have a horse trailer, which I would like to rewire for lighting and other accessories. I plan to have an onboard 12v deep cycle battery. I want the lighting and accessories to be powered from the 12v trailer wiring while connected to the tow vehicle and the battery when not connected. Also, I would like to know how to connect the battery for trickle charging from the 12v trailer wiring

asked by: Paul B

0

Expert Reply:

Basically you'd need to run the power wire for the lighting and accessories to the same wire that runs to the 12 volt battery to charge it from the trailer wiring. This basically will allow you to power the circuit at any given time but when connected to the tow vehicle it's going to pull from the tow vehicle's charge circuit. This also will put a maintenance charge on the battery when towing like you wanted as well.

expert reply by: Jameson C

0

Answer 1

If you have 12 volt lights in your trailer that you are wanting to power with your trailer's battery all you need to do is run the power and ground to the battery. When your tow vehicle is connected they will either be powered by the 12 volt…

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Answer 2

I have attached a photo for you that shows how a 7-way trailer connector is wired. If you take a look at the trailer side trailer connector you will see a terminal labeled "12V Power". If you were to run a wire part #10-1-1 (per foot) from…

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Answer 3

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Answer 4

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Answer 5

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Answer 6

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 7

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Answer 8

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

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Answer 9

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Answer 10

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Answer 11

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 12

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How Can Trailer Lighting be Powered From Onboard Battery and Tow Vehicle

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