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Looking at the switch picture, the red/grey thin wire is probably the gauge lighting, and I guess the double grey one may be for the front parking lights, but I'm not entirely sure of that as they usually go through a fuse. Does yours have the side lights on the fenders near the doors? Somewhere there should be the feed for the tail lights - a slightly thicker grey wire. It could be the one at the front. This feeds both rear light fuses. In some circuits this also does front lights. With the light switch on its first position, I would expect you to get voltages on all the wires apart from the black/white one which supplies thr headlights. If any of them wobble about between 0 and 12 you probably have a bad contact in the switch. Sometimes they can be dismantled and cleaned, but you risk not getting things back together. They may be rivetted together or use bent lugs. There are lots of bits inside, so be careful if you do pull it apart, and be sure that's the problem! If it turns out to be the switch, you may be able to add the wires to one of the other connections with a piggy-back connector. You are learning electrical fault-finding - that's a handy skill to have. Good luck. Dave. UK VW Type 3 & 4 Club http://www.hallvw.clara.co.uk/ ------ ----- Original Message ----- From: <type3weezer@comcast.net> To: <type3-d@vwtype3.org> Sent: Saturday, February 11, 2006 1:24 AM Subject: [T3] lights update > Evening All, > This is a further update on my non working rear tail lights... > > This is a photo of my light switch. > http://www.thesamba.com/vw/forum/album_page.php?pic_id=255166 > > The rear parking light wires go to two different terminals. I played around with the voltage meter and can tell you this. I get a reading of 12 volts on both sides of all fuses. With the light switch off, I tried the gray and red lead on the back of the switch. I got a reading on the meter but it bounces around. When I turn on the parking lights, I get dead zero on the meter from the same terminal. > I turned on the parking lights and then tried the copper contact behind the rear parking light on each side but still got zero. I got the same results from both sides. > I could understand one wire from the front to back going bad, but both??? > > I'm still thinking it's the switch but would appreciate any further help. What should I look at next? > > I'm sorry but I wont be able to get back on line tonight (starting work at 4 am stinks) But I will continue this thread tommorrow and hopefully will try any other suggestions. > > As always, Thanks folks!!! > -- > John > 65 square (weezer) > 04 jetta > Just Cruisin By > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~