Having problems with your 1991 Buick Regal ?
How do I set the brake light switch? - 1991 Buick Regal
Switch should be located on the metal piece above your brake pedal under the dash. Follow the metal brake bar to the top and there should be an electrical switch mounted there. when you dont have your foot on the brake the switch should be depressed against a bracket. When you push the pedal down the switch should no longer be depressed.Tha'ts how your brake light circuit works. Sometimes they can be adjusted. But most of the time you have to replace it. They are not hard to change. Just in a tuff spot under the dash. Before replacing the switch you should try turning the piece that makes contact out farther to try and add more pressure against the metal. I don't know if you turn clockwise or opposite.Try counterclockwise first. Good luck
Repair Help & Product Troubleshooting for 1991 Buick Regal
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