GM 700-R4, 4L60 & 200-4R Pressure Switch, Lock-up in 4th (External) with wiring! This Kit from Superior will improve all 700-R4, 4L60 (not including the electronic 4L60E) & 200-4R Transmissions. The High Gear Lock-Up allows lock-up in 4th gear only. The kit includes a pressure switch and all wiring necessary. This package also offers instructions for external and internal mounting in English and Spanish.