Need help: switchbox isn't working

[The Big Green]

Ok, it's kind of embarassing. I was driving last night and I couldn't get into 2nd or 1st. I got to a place where I could see and the wires from my AVS 7 switchbox got pinched in the shifter. I couldn't down shift because of the wires getting caught in the shifter. Now it won't work, I guess I shorted it out. I cut the cord open and found 3 wires cut, not into but pinched and stripped back. I guess they touched and shorted out. I guess I will need a new switchbox? Anyway I can test it tear it apart and check the switches? There's a show next Saturday so I need to fix it.