Problem solved, turns out the main ground wire for the PW & PDL switches was the problem.
Thanks you to my uncle who replied to my FB post & reminded me of something he told me years ago. 90% of trailer light problems (and electrical problems in general) are due to a bad or broken ground wire.
Well so far I haven't received much help on this forum but I'm still working on the problem so I'm going to keep posting.
I have ruled out the window motor being the problem by running direct 12 volts to the motor.
I have also replaced the GEM module but still no luck.
When I push the window switch for the drivers window I can hear the relay switch make a click but window doesn't move. If I push the switch for any other window (on the drivers door or any other door) no click at the relay and no window movement. I've swapped the relay with other relays in the...
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