Reversing Lamps
WARNING: This page is about a different car, the 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
On vehicles equipped with an automatic transmission, the powertrain control module (PCM) controls the function of the reversing lamp relay to provide voltage to the reversing lamps.
On vehicles equipped with a manual transmission, the reversing lamp switch controls the function of the reversing lamp relay to provide voltage to the reversing lamps.