@cadillac93, Zentella, On most of the Cadillac's the reverse lights are controlled through the transmission Range Switch/safety neutral switch and computer, switch is attached externally to the side of transmission on the gear selector shaft. Check the links below for more info., the 1st pic. is what the safety neutral switch may look like and the 2nd pic is wiring under the steering column. If need be pop into the Cadillac dealer for more info. and part availability,etc.. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.

http://estimate.myautomatictransmission....

http://www.cadillacforums.com/forums/cad...