Installation of these TCI 2004R/700R4 lockup wiring kits makes retrofits into non-ECM 700R4 or 2004R vehicles a snap. They allow automatic operation of the TCC in 4th gear under stable engine operation, and disengage the clutch when accelerating or downshifting. Also provided in these kits is a manual override option. These kits are constructed from OEM connectors and oil-resistant wire.