Q: How to remove and install Back Up Light Switch?A: The back-up light circuit is controlled by a switch on the transmission case. If a fault occurs, check the circuit fuse first. Test the switch for continuity when in reverse gear using a multimeter. If there's no continuity and no wire damage, replace the switch. To do this, raise the vehicle, disconnect the wiring, and unscrew the switch. Install the new switch, reconnect the wiring, and test the circuit. Finally, lower the vehicle.