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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Check all of the fuses

Posted on Dec 23, 2008


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first if you smoke and was using the cig. lighter look at the element in the lighter and inside the cig. housing may need replace.will cause fuse short open. next get a volt meter and test fuses for 12 volts.the horn may be on a seperate fuse and you may have bad horns or a relay.again you need to unplug the horns and check for voltage on the horn wire when the horn button is voltage then remove steering wheel cover and test for voltage threw the horn switch.

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