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Discussion Starter #1 (Edited)
Hello. This is my first post and may or may not be the place to ask this. I just got a 2017 Titan from the dealer. 1 owner, 15k miles. I noticed a plug on the back and followed it up to the battery. Red wire, black wire. Maybe 10 or 12 gauge? What would something like this be intended for? Maybe a winch on a trailer? I'm just curious about it as for its purpose. Thank you.
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2017 texas titan 4x4
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Welcome. That is odd. Maybe for some type of rear lights? The wire seems kind of small for a winch, unless it's a small winch on a trailer for pulling stuff into the trailer?
 

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Discussion Starter #3
Found my answer. Would be connected to a trailer with a battery on it that runs a winch or other auxiliary. Truck system would charge trailer system.
 
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