So I tried a different TV again, and this time found very different results! When I tried to back up, the trailer brakes locked up. The new tow vehicle was a factory wired GMC Envoy so I was confident that it was wired correctly. After switching the reverse and brake controller wires in the trailer everything seems to work right. The trailer brakes were not working before, and the brake controller was sending little blips to the reverse lights. My only complaint now is that the reverse lights have a red lens... They ought to be white. There are no white lenses on the rear of my Scamp, and the turn signal lights double as brake lights.
To state my root cause more clearly: my original TV AND the Scamp were both wired incorrectly! Problem solved when I got a new TV and rewired the Scamp 7 pin connector.
Sorry for the long delay...
So I tried a different TV again, and this time found very different results! When I tried to back up, the trailer brakes locked up. The new tow vehicle was a factory wired GMC Envoy so I was confident that it was wired correctly. After switching the reverse and brake controller wires in the trailer everything seems to work right. The trailer brakes were not working before, and the brake controller was sending little blips to the reverse lights. My only complaint now is that the reverse lights have a red lens... They ought to be white. There are no white lenses on the rear of my Scamp, and the turn signal lights double as brake lights.
To state my root cause more clearly: my original TV AND the Scamp were both wired incorrectly! Problem solved when I got a new TV and rewired the Scamp 7 pin connector.
If you have these style lights you may be able to just swap out the lenses.
Eddie
https://amzn.to/32Ja1pV
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