The TV cable is the most important part of a 700r4 transmission, if it is not connected or connected properly, the transmission will not operate correctly and will burn up.
The cable is connected to a little valve called the Throttle valve. This valve controlls the entire behavior of these transmissions.
All the computer does is sends power to the converter clutch solenoid which puts the converter in lockup mode when the transmission shifts into overdrive. The lockup shuts off when the transmission shifts back into 3rd or when you step on the brake pedal & is controlled by the brake light switch.
Check out Bowtie overdrives,
http://www.bowtieoverdrives.com/index.shtml They build 700r4's and sell the kits to properly adapt a tv cable to just about any carb or fuel injection.
They also sell a kit to controll the lockup converter without the use of a computer.
