Having problems with your 1985 Buick Skylark ?
Tail lights and dash lights come on when you push the brake
You could have one of two problems here. Firstly if you are getting a christmas tree effect on rear lamp assy ie dull glow from all the lights ,, It's most likely a bad earth/ground connection to lamp,,Secondly if anybody has changed rear bulbs or attempted to fix the problem may have inserted a single contact (21W) indicator/turn signal bulb into the Twin contact brake/tail light socket in error . one bulb (21W) has oposite located pin lugs on side of bulb the double contact brake tail bulb (21/5W) has offset pins. Good luck
Repair Help & Product Troubleshooting for 1985 Buick Skylark
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