Reversing lights are often overlooked when performing a simple safety inspection. Lights that don't work may be attributed to a faulty backup switch instead of the usual burnt out bulb. A simple switch replacement can restore these useful and safe tools on your car.
Jack the front of the vehicle off the ground and secure with jackstands. Climb underneath and at the rear of the transaxle look for the backup switch. It has a plastic connector with two wires and probably is in a wire loom. It is near the top of the transaxle housing.
Clean the connector and switch with some solvent. Wipe clean with your rag. Release the connector and inspect for corrosion or loose wires. Repair and clean if necessary.
Remove the backup switch from the transaxle housing using the correct wrench. Reinstall the new switch and replace the wiring connector. Check for proper operation.
Corroded and dirty connectors may be the overall problem. Check the connector integrity before replacing the switch. Using a mirror can help in getting an overview of the switch and connector end.
Solvents are flammable. Do not use around sparks or flame. Wear goggles when using solvents. Take care to place the jackstands on solid portions of the frame so they don't slip. Undersides of cars collect a lot of dirt. Wear the goggles to protect your eyes from falling debris.