I have a 1997 Cadillac Deville, my cigarette lighters and courtesy lights are not working, I have changed the fuses already, what should I do?

It really sounds like it is your cigarette lighter fuse, but could possible be a problem with the BCM. If you double check the cigarette lighter fuse and find it to be good, getting power in and putting power out. You might end up at the dealership for a BCM module diagnostic.

Hopefully just a blown fuse...refer to your owners manual for the location of your fuse panel...there is a specific fuse for dash lights, some include cigarette lighter...Is your cig lighter working?

These are just ideas, but In my simple attempt....start with checking, or have someone check every fuse in the fuse box. Another thought is that the turn signal indicator arm that controls blinkers, high beams has finally gave out. And when it did, it might have shorted out the horn. Being a 1993, it has probably seen some usage. Does the cigarette lighter work?? Also check the fuse in the fuse box that controls the horn, because in some of my experiences, the cigarette lighter and the horn are sometimes on the same fuse.

Fuse number 18 20amp is for cigarette lighter.Its located in the trunk compartment fuse box. ------- If you need fuse box diagram showing the cigarette lighter fuse.Click the link below and see the diagram:---
http://technoanswers.blogspot.com/2011/10/where-is-cigarette-lighter-fuse-located.html ---------- This will help.Thanks.Helpmech.

their is another fuse box inside the car under the rear seat ck the fuses their.

Hi, you have to replace the cigarette lighter fuse....

check all of your fuses ,a blown fuse might be the problem, the cigarette lighter usually is on the accessories fuse as is your interior courtesy light the fuse box is probably under the bonnet but there may be one under the dash as well....hope this helps ....cheers

the BCM controls the lights, the cigar lighter will burn out at anytime so replace the knob and element

If there is no power to the sockets, changing the bulb wont correct the problem. Check all fuses. Check for current to the tailight. Check for ground to the tailight. Repair as nesessary.
Check cigarette lighter filament. It may be faulty. Check inside cigarette lighter socket. It may have a foreign material in it causing the short.

check blown body and / or lighter fuses 20A