Question about 1992 Cadillac Eldorado

1 Answer

Brake lights rear

Will not work replaced brake switch grounds r good all bulbs r new back window light works and all other lights work WHAT! HELP ME!

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You should check the fuses. There may be a separate fuse from the brake lights and the interior brake light.

Posted on Dec 05, 2008

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Brake lights don't work. Replaced bulbs, checked


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On occasion the tail lights will work with a weak ground circuit where the Brake lights won't. Best way to determine this is to just hook up the 12 volt tester to the Brake light hot wire & there at the bulb ground, then in an area away from the bulb that has a good possibility of contact/ground.

Really that's it, if the 12Volts is getting to the bulb but it isn't lighting, if you aren't getting the voltage there and the brake switch is hot on both sides when pressed, the break in voltage will have to be traced from that switch to the tail light to find the problem.

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Rear brake lights are not working


Hi,

There are a couple of probable reasons why the brake light are not working, they are:
  • brake switch - underneath the dash. It is activated when the brake pedal is pushed. It is a spring loaded switch and is normally off. If the sprin is defective/missing then the switch will not activate;
  • brake light fuse;
  • bulbs;
  • corroded bulb socket - most brake lights are integrated with the rear park lights. The bulb socket would have 2 contacts, try checking if they are clean and reaches the mate in the end of the bulb;
  • wrong installation - the bayonet socket of most park/brake lights combo are offset, there is a right and wrong way if installing it into the bulb socket;
  • loose wire - it would be required to trace the brake wire to where it joins the rear harness;
  • loose ground - same as above or a workaround is to wire an additional ground wire from the housing of the bulb socket to any screw that is connected to the body ground.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

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