Interior lights are not working

Check the position of the dimmer control for the dash lights. Many have positions that will turn off interior lights. If it is okay and you still have no interior lamps you would need to have the Rear Integrated Module tested or replaced.

1996 Cadillac DeVille .When I open the doors I have no interior lights , cig. lighter and cruise control stopped operating . Can't find the locations for the fuses and relays. Any ideas?

Hello,

There is an INT LP relay that needs to be checked here is a guide to help with the wiring diagrams so you can see how the system works and the relay location as well below.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.