Question about 1997 Cadillac DeVille

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97 Cadillac Seville Electrical problems

I just bought a used caddy that seemed to be OK but I am finding a few "hiccups", The horn won't work and the brake lights only work if a blinker is operating. The center rear brake light bar works just fine. This is also the case no matter if the park lights are on or not. Also any advise on changing the rear O2 sensor next to the fire wall?

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  • Anonymous Dec 09, 2008

    97 cadi devil. left and right brake lights don't work but the center bar light works fine. any ideas?

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  • 21 Answers

Check all of the fuses

Posted on Dec 23, 2008

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1 Answer

Have electrical issues on a 2004 mazda 3.


I would check every single fuse in the car. Blown fuses can cause weird issues like this. While the initial issue with the mechanic does sound like an alarm problem....the rest does not unless the shop that installed it really butchered the job.

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98 vw beetle no wipers, blinkers, blower and brake light is on


It covers all under repair manual. I have visited this website 2-3 times for the repair of volvo v70 and vw manuals. They provide all kinds of manuals at a very cheap rates. Check it may be you will get something useful 1998 Volkswagen New Beetle Workshop Repair Service Manual PDF Download

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Pontiac sunfire interior lights, horn and blinkers do not work


They are talking about the body control module, but I'm not sure they are right. The horn does not need the bcm to work. See diagram below. The horn relay is energized by the horn switch on the steering wheel. The switch also signals the bcm, but that is not used to power the horn.

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The turn signal does not use the bcm at all. The problem there may be the switch or the wire. See diagram below.



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The instrument lights DO REQUIRE the bcm, but can be rewired to bypass the bcm. The gray wire from the bcm in the diagram below powers the instrument lights. You can cut the gray wire and splice it to the brown wire from the multi function switch. Find the brown wire coming out the bottom of the steering column, skin some insulation off the wire and verify it has 12 volts when the parking lights are on. Do not cut the brown wire--just attach the gray wire to it. You will not be able to dim the lights, but they will come on.



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Aug 07, 2017 | 2005 Pontiac Sunfire

1 Answer

I have a 1990 Mercury Cougar. Several problems...Blinkers, hazards, horn, and break lights are not working. However the break light in the back window comes on when the break is pressed. Checked fused and...


I am unaware of what a "CO" display is.
Now with the blinkers, hazard, horn and brake lights not working that may be the multi funtion switch (blinker switch) that is located inside the column (where the blinker lever attaches).
Obviously the blinker, hazard and horn will all work off of something in the column. Brake lights, you may think a switch on the pedal.

the brake lights do work with that switch but when you have the kind of tail lights where a turn signal light shares the same bulb as a brake light, the brake light is cancelled for the turn signal by running through the multi function switch inside the column.
The third brake light does not blink so its not on that same circuit.

Oct 07, 2011 | 1990 Mercury Cougar

1 Answer

1995 deville when remotes are used NO horn chirp or light flash


When the car was built they did not have the chirpping option. I had owned a 95 & a 96 both purchased new and that chip you will not here from a factory unit. Maybe aftermarket has that option if you know someone with the chipping noise in their Caddy. I also worked at a Caddy dealership for 7 years and never heard one chirp in any 90's model

Jan 13, 2010 | 1995 Cadillac DeVille

2 Answers

My brake lights wont work,i checked all the fuses,bought new bulbs,and bought a brake switch,and still nothing.my regular lights come on,just my brake lights dont work.dont no if this is part of the...


Just had a similar problem. Brake (stop) lights and horn didn't work. Couldn't find mention of stop lights in fuse chart. Found horn fuse to be slot 21 in the engine fuse block (not the fuse block in car interior). Replaced 15A fuse and all now ok.

Aug 21, 2009 | 2005 Mazda 3

1 Answer

Horn and blinkers quit working


Consult you owners manual or a repair manual to be certain of which fuse. Or you can always just pull the fuses one at a time until you find the one that is blown (upon visual inpection the metal inside the fuse will no longer be intact). You can also take a test light to check for operation. I prefer one of the first two methods. Hope this helps.

Oct 05, 2008 | 2000 Toyota Tacoma PreRunner

3 Answers

Break lights


could be fuses email me with more info or questions at meanness628@aim.com

Sep 30, 2008 | 1997 Pontiac Sunfire

1 Answer

Brake light/ blinker


Its one of your Relay switches.

Jul 04, 2008 | 2005 Ford Focus

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