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Re: One light went dim and then the other. High beams...
You may have a ground that has lost connection,check all your grounds near the front of the vehicle.They will be grounded to the body make sure they are clean and free of rust.
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Oct 11, 2014 - Hi everyone, My drivers side headlights are dim on low, (car has separate bulbs ... When the headlight switch is turned ON, but for low beams, ...
Mar 12, 2015 - 10 posts - 4 authors
The high beam continues to work on both sides...I pulled the Driverside headlamp fuse and then both left and right beams lit up but very dim.
forums.tdiclub.com > ... > VW MKIV-A4 TDIs (VE and PD)
Jan 23, 2014 - My driver's side lights are working fine - high and low beams. ... But it definitely looks like the big lamp on the driver's side gets brighter when ..... Drivers side headlight is very dim on low beam and goes out when on high beam ...
check the dimmer switch, I had the same problem. this dimmer switch didn`t dim on low beem but went out on high beams, turned the dimmer switch up and down/on and off and it came back on.
Check your connections at the wiring harness going to headlights for corrosion, sounds like high resistance somewhere, also make sure your ground wires are secure. It wouldn't be the alternator or the battery would be dead and not start the engine. Also shouldn't be any condensation in your head light assembly's or will cause bulbs to blow prematurely.
Right now, I'm thinking the head lamp switch assembly has a problem? See the wire color in the top of head lamp, that is voltage, fuse protected, hot all the time. When problem is ongoing, you could use a test lite, check for voltage at fuse circuit?
The headlamp switch assembly is located on headlamp ground circuit. There could be a wiring problem, somewhere. I can only help with testing.
The quckest way to fix this is to fit a relay to your high beam light circuit. This will feed power directly to your high beams and cut out the high resistance of switch and wiring.
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