wow, i got hit by the wire bug too... 3 wires cut, 2 wires showing bare... looks like the wire insulation can't take the bending?
my tail light was out and couldn't find the problem. until i popped the boot loose. my wires got sliced at the chassis side boot. not sure if you guys had the same issues. i just popped the boot off the bottom and slid it up. also, make sure to be aware, the bottom side boot has a leg that is wrapped into the loom. so when you pull the boot it pulls the loom. it stretches good, but i would assume try to not cut it on accident.