Wow, this sounds like an electrical nightmare. Have you checked all wiring? Also, do you have a scanner that can monitor the TCCM for operation and diagnostic issues?
Do you have a schematic of the wiring system? I have three schematics that I have tried to attach. I don't know if they will show up for you. If they don't, let me know wires, color of wires and questions you have and I will try to help.
Images (Click to enlarge)
Thursday, August 21st, 2014 AT 6:19 PM