headlight problem

i have a 2003 Jetta TDI with 83,000 miles. i was driving the other night and both headlights went out but the high beams still worked and the dash lights and tails were still on. so i pulled over and checked the wiring harness to both lights and didn't find them to be loose. then i hit the hood and the right one came back but i could get the left one back. 5 minutes later, a cop pulled me over and preceded to tell what i was already quite aware of. anyway, today i took off the cover on the back of the left one(the right one is still working) and check the bulb which seems to be fine. i messed around with the wiring there for a few minutes to see if the connection was the problem. when i closed the hood, the left one came back. so...I'm not sure what to do now. any help would be greatly appreciated

Reply to
Dylan
Loading thread data ...

I find that the halogen cartridge lamps get really sensitive to dirty connections. Furthermore, if you choose to install Chinese Junque in place of name-brand cartridges, you will find that the internal connections fail in fairly short order even if the filament(s) appear intact. Try a continuity tester on the lamp and/or a VOM on the socket to determine where the fault may be. Then, search down the relay and see if that may be faulty, or dirty. The headlights are amongst the single heaviest draw in the vehicle, taking something on the order of

60 watts (5A @ 12V) each. They are merciless on corroded or dirty contacts, each one will heat up in turn and fail as the previous failure is cleaned up. This means relay/switchess, fuses, and especially plugs.

Clean _everything_ and then check with your meter.

Peter Wieck Wyncote, PA

Reply to
pfjw

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.