Headlights, taillights, brakelights, horn do not work... left third of dash doesn't work

The 30 second brake pedal thing did nothing. I found fresh dirt up in the back rear of under the frame where all the wiring to the back end lighting is, but haven't been so lucky that I just had dirt grounding a wire out. I checked all the fuses already that are remotely related, they are all fine. Radio works fine, btw. My immediate concern is obviously brake lights so I can at least drive in the day. Head and tail lights so I can drive at night. It's a 5 speed, I don't actually need the tach so the left third of the dash is last concern. But I do remember the moment the lights went out, I was trying to rock back and forth out of the ditch (and making things worse positionally). The left edge of the back bumper was stuck in dirt. The ditch was basically a V shape, 5 feet wide, 3 feet deep. Cluster? ... If this was a brake or clutch job, I could do this easy. Wiring, not so much.

Signals and 4 ways work

With and without brake pedal

So..... I've narrowed it down with the ole multimeter that somewhere between the wiring harness and the back end, 3 wires are facked. I've decided that I'll be busting out the soldering iron and getting into that fun in the morning.