Question about 1985 Buick Skylark
No brake lights but 3rd brake light works all fuses are good
It's still worth checking/ replacing the two rear bulbs ,, Because the 3rd brake bulb is usuall a different type of bulb compared to the two lamps in the rear panel . different life span and less prone to oherheating and shortening life span ob bulb. Good Luck
Posted on Apr 11, 2010
Sounds like a broken wire somewhere.
Since the middle brake light works I would suspect it is somewhere in the trunk or close to the back seat.
Buy or make a tester. A 12v light with a clip on one wire that you clip to a good ground on the car the other wire with a sharp point. Turn the turn signals on then poke wire to rear lights until tester lights. When tester lights you know the break is somewhere inbetween the tester and the brake lights.
Hope this helps.
Posted on Apr 18, 2009
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Posted on Jan 02, 2017
I dont have a diagram but the brake light switch has to feed the turn signal switch, Either that wire has a bad connection, or the turn signal switch is bad. Jiggle the turn signal lever and see if the brake lights try to work.
Posted on Nov 25, 2009
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