VSC and 2 to 4 wheel drive not functioning.

This is a wild shot but if anyone has answers, it's probably you guys. My ride is connected to a Bullydog (came with it), an obvious back yard install with wires hanging out from under the dash. I found the accessories wire disconnected and put it back in properly and cleaned up the rat's nest. I don't know if it has anything to do with it or not but the VSC light is flashing, have no 4x4 indicator and seem to be locked in 4 wheel drive. I held the VSC button for 3 seconds, shut off the vehicle then restarted but it does not reset the VSC. And still nothing happens with the 2 to 4 wheel switch. Any suggestions would be greatly appreciated.

 

Trac light / vsc | Toyota Tundra Forum (tundras.com)

check the cause and effect chart in post 2

 

You may have rodent damage to the harness.