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How to Identify Wiring Configuration on 1964 Aladdin Travel Trailer

Question:

The towing vehicle has a 4 Flat Plug-white,green,yellow, and brown The trailer has 4 wires as follows - red, green,black, and white. Question / Which color wires from tow vehicle go to what color wires on trailer? Thx

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Helpful Expert Reply:

Since trailer wiring colors can vary the best way to determine the correct wiring configuration to match your vehicle's 4-pole flat trailer connector is to do a simple test on the trailer. All you need to do is use a spare 12V battery or the (one in the vehicle) to apply power to each wire to see what function is activated.

White wires are usually ground so connect the trailer's white wire to the battery negative terminal and then one by one connect each of the others to the positive terminal. This will tell you which wire to connect. You can refer to the linked article for help on how 4-pole wiring is configured.

Once you confirm the functions you can attach a trailer-side 4-pole plug like # HM48110. The linked article gives you the configuration for 4-pole wiring.

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