[greg64]

Rizick, if I were looking for a 700R4, I'd take one of two paths:
1) buy one off Craigslist (they're listed here quite frequently) and take it to a shop for a go over.
2) talk to a local transmission shop, as many of these guys who rebuild trannys will rebuild cores they've come by in their "down time" and then resell them.

The TV cable isn't that scary, it modulates the line pressure in the transmission. It needs to be connected in parallel with your throttle cable and adjusted appropriately. Tim64 was just going through this on his rig. The worry is that the pressure is too low when you've got your foot into it, which would cause the bands and clutches to slip, ultimately burning them up.