1993 Buick Regal Turn signals

Tiny
CDWARNDT
  • MEMBER
  • 1993 BUICK REGAL
Electrical problem
1993 Buick Regal 6 cyl Front Wheel Drive Automatic

All lights work with hazards but when I turn on left directional the left rear lights stop working. Also the same with brake lights. The front left turn signals work fine but rear refuses to. Obviously bulbs are good. Whats up with that?
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Saturday, March 13th, 2010 AT 2:51 PM

1 Reply

Tiny
CARADIODOC
  • EXPERT
Check for a bad ground on the left rear sockets. Sometimes when just the left signal is turned on, you might see the right side glowing dimly because current going through the left bulb can't get to ground, ... It finds an alternate path through the right tail light bulb.

You can also measure the voltage on the ground terminals of the left rear socket. There should be 0 volts. If you find voltage, look for a rusted ground wire terminal where it's bolted to the body, or corroded terminals in the socket.

Caradiodoc
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Saturday, March 13th, 2010 AT 4:09 PM

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