My car did not come with the optional back-up lights. I located a switch that mounts to the push-button shifter assembly and made a tab that I epoxied to the Reverse blade on the shifter. The back-up lights are now working great. I also replaced the rubber bumpers inside the shifter while I had it out plus dabbed some lubriplate on the sliding parts. The wiring for the back-up lights was in place and just had to connect the two wires from the switch and install a couple sockets and bulbs in the trunk to the existing wire harness.