1992 Mercedes Benz 300e brake light short

Tiny
MANTONE
  • MEMBER
  • 1992 MERCEDES BENZ 300E
  • 3.0L
  • 6 CYL
  • RWD
  • AUTOMATIC
  • 190,000 MILES
When my headlights are off, everything works fine. With headlights on, when I hit the brakes, my taillights go out and the brake lights don't light up. I'm really hoping there could be a simple solution because I can't afford a wiring diagnostic. Any thoughts?
Thursday, March 13th, 2014 AT 5:41 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
This is typical of a bad ground on the rear lights. Look first for a broken or corroded wire. If the car has a trailer wiring harness, check if someone used "Scotch Lok" connectors to make the splices. Those don't keep moisture out, and that will result in a corroded connection.
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Wednesday, March 19th, 2014 AT 2:55 PM

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