Is there constant 12V power for 7pin trailer plug?
Is there constant 12V power for 7pin trailer plug? I just purchased a product called White Night. They are rear facing lights that mount over the trailer hitch which plug into the factory 7 pin connector. While installing this I found out that from the factory the 7pin connector does not have the constant 12v connected. What kind of power do you need for brakes on a trailer? The black post is for the auxiliary power, the silver one is used for hooking up electric brakes for a trailer. You will also have to get a 40 amp fuse for...