97 vw golf rear lights gone crazy - Automotive Wiring and Electrical


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97 vw golf rear lights gone crazy

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Auto Repair Home>> Automotive Repair>> Automotive Wiring and Electrical

pjg
New User

Feb 14, 2010, 7:01 AM

Post #1 of 4 (1650 views)

97 vw golf rear lights gone crazy	Sign In

its a 97 vw golf 4cylinder hatch back when i turn my lights on and touch the brake and turn on the signals the signals will go out in the back only any sugesstions

DanD
Veteran / Moderator
DanD profile image

Feb 14, 2010, 11:57 AM

Post #2 of 4 (1645 views)

Re: 97 vw golf rear lights gone crazy	Sign In

Kind of sounds like a lack of ground problem.
With only one circuit energized, the light will light because it will use another feed circuit to find ground. But when both circuits are energized, there isn’t ground to be found; by back feeding thought the off circuit.
Looking at most external light circuits, they are three legged; two power feeds (tail & turn signal light) and one common ground. If the ground is missing; one or the other power feeds, after going through the bulb; will back feed the light circuit not being requested and finds a ground through its circuitry. When both light circuits are requested; the power of both cancel each other out and nothing lights; until the third leg (ground) is added.
Most manufacturers (all but VW) use a black wire as ground; VW has always used a light brown wire as the colour for their grounds.

Dan.

Canadian "EH"

pjg
New User

Feb 15, 2010, 5:40 AM

Post #3 of 4 (1635 views)

Re: 97 vw golf rear lights gone crazy	Sign In

it was a ground i unpluged the back lights and the ground wire was rusted thank you 4 the help

DanD
Veteran / Moderator
DanD profile image

Feb 15, 2010, 7:21 AM

Post #4 of 4 (1633 views)

Re: 97 vw golf rear lights gone crazy	Sign In

Thanks for posting the fix.

Dan.

Canadian "EH"

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