12V Electrical puzzler (trailer lights)
Have a very strange issue with the lights on my tow dolly. The issue is with the coach, not the dolly as it manifests itself at the trailer plug in connector. Turn signals work normally. 4-way fla...
Forum Discussion
It's become commonplace for the chassis to have separate circuits, therefore fuses, for its own stop/tail/turn lighting and the trailer's stop/tail/turn. It's possible a fuse was blown in previous damage, something shorted plugged in, etc. Your dolly and your coach could both be OK now but the fuse blown because something happened in the past.
Sometimes, possibly for convenience, a coach builder connects the rear coach lighting to the trailer circuit. Doesn't seem that's the case here, but we've seen that on the forum recently.
Sometimes, possibly for convenience, a coach builder connects the rear coach lighting to the trailer circuit. Doesn't seem that's the case here, but we've seen that on the forum recently.
