I just leave the lights on auto. When I first wired it up before I finalized everything the only error I had was on the trailer screen saying to “check connections”. Which I did and all the lights were working, I believe it may have been initially confused why 12volts were returning when it was only sending 9volts to begin with. I also only had it hand twisted together so it may have had a loose connection.
So at last pull I just hooked up like normal, turned on the camera power switch and had no errors on the truck. But it may say to check your connection or lights but a quick check you can confirm everything works fine and dismiss the dash notification. For me it hasn’t came back up since, so it may have been a loose connection before I finalized everything.
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