OK, '87 350 TBI, 700R4, NP208 Here's my problem: I have a short in my wiring somewhere. Whenever I put the transfer case in 4x4, it causes my radio to go out. My hubs are not locking in. It will also cause my radio to go out if I use the dash button for the rear window. I really need to make sure I've gotr 4x4, since hunting season is here. If I unhook the wires off of the top of the transfer case, the radio does not go out, but my 4x4 still does not work. SO, I am wondering if I put manuel hubs on the truck, can I leave those wires off of the top of the transfercase unhooked and still have 4x4? What are these wires going to, a sensor, or a solenoid? I know it's on top of the t-case, just not sure what it was. Also, if anybody has a better wiring diagram than what Haynes has, I would appreciate it. The t-case and rear window daigrams are not in the Haynes manuel.