DS18 RC-PWK4D Red Cobra Universal Power Window Kit for 4 Doors New Developed 4-Door System Power Window Kit. 12 Volts Universal Type. New Design with less friction and 20% more power than most other models and longer life operation Converts any crank-style window to a power window for any car, van, RV (Universal usage). Two doors with three illuminated switches, housing and wire harness included. Four doors with seven illuminated switches, housing and wire harnesses. Steel power metallurgical main gear. Motor with Japanese Technology. Superior Quality and High Technology. Universal Hardware for easy installation and quiet operation. Operating Voltage: 12VC DC +/- 2V. Various Switch Types are Available.