Either you reverse solenoid isn't getting power (blue wire) or the solenoid is bad. Test from the 7 pin round to all the way to the solenoid until you find where it's losing power. Could be a bad adapter, pigtail or connection. Sometimes the tabs in the 7 pin round need to be adjusted to make a good connection after extended use or with a worn adapter.
-Matt
Mine is doing the same same on my 2014 GMC Sierra Danali .I have the 7 way round to 5 flat adapter and the blue wire is not getting any juice when the truck is in reverse but my backup lights on my truck are working fine!!! I checked all of my fuses. Everything looks good. ???
Your truck backup lights are on a different circuit than the trailer. Look for a fuse labeled for trailer backup lights. Probably fuse 16 in the box under the hood.Originally Posted by hotdog87
If you have integrity, nothing else matters. If you don't have integrity,
nothing else matters.
Thanks, I will check it out in the morning.
CatFan , Thank you!!! Fuse number 16 was my problem!!!
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