Turn Signals Out - Help!

I have an '07 Tacoma with DRL's. I brought a new (used) trailer home a couple of days ago and after hooking up the lights, noticed nothing worked. I chalked it up to a bad ground on the trailer and drove home. Now, the DRL's and turn signals do not work, though my tail lights, hazard lights, and brake lights are good.

I don't appear to have any bad fuses, and after taking apart the trailer's 7-pin connector, I found a mass of shorted wires which would seem to be the source of my problem.

I don't see where the problem could be anywhere else in the circuit but the flasher. FYI, I do have aftermarket LED tail lights, but they've never been an issue and still work fine.

Appreciate any help!