Interior lights are not working

MARK JOSEPH BARTOK

MEMBER
2002 CADILLAC DEVILLE
4.9L
V8
FWD
AUTOMATIC
78,000 MILES

When I open the doors I have no interior lights. All fuses and relays are good. The map lights come on manually but nothing when I open the doors. Any ideas?

Sunday, January 1st, 2017 AT 12:56 PM

3 Replies

STEVE W.

MECHANIC
13,463 POSTS

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.

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Sunday, January 1st, 2017 AT 5:18 PM

ITSAWRAP

MEMBER
1 POST

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?

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Tuesday, August 6th, 2019 AT 9:09 AM

KEN L

MASTER CERTIFIED MECHANIC
47,625 POSTS

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.

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