Traced the wiring and found the bad wires on the connector. Cut that sucker off and spliced in a new trailer side connector. Pulled the bad module off (only trailer lights and left turn signal working) and spliced in the new one.
I've been thinking...that I need some sort of visual feedback so I know that the trailer side lights are working correctly since I can't really see unless I git out and walk back to Dark Aero. I have the old vehicle side connector (with built in LEDs) that I could splice in to the trailer side harness that I could mount to the front/top of Dark Aero's lid and see what is working and what is not.