The wiring to the camera mount point on the back of the trailer will have been wired by the factory. Exactly what it's wired to is a good question. It should be connected to the running/marker lights, so that any time the tow vehicles lights are on, the camera has power. However, I've read posts where people found their power coming from the back-up lights and others where the power was on all the time and they had to install a switch to turn it off.
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2022 Cedar Creek Champagne 38EL - "Big Bertha"
2019 GMC Sierra 3500 Denali HD 6.6L Duramax TD, CC, 4WD, DRW - "Mr. Beefy"
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