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#1
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Mercedes W123 Headlights
(I converted my head lights to halogen a couple years back; they worked great; very bright and no problems)
Recently, my low beams stopped working; I've tried replacing the bulbs twice. When testing the fuses (I think they are #11 and #13) I have no power coming to the fuses. (High beam fuses get power, no problem there.) So, I thought it must be the switch. I removed it and tested all the positions for current flow (by using the simple tool that has an alligator clip on one end and a metal probe on the other end.) ALL positions on the switch work fine! Apparently, the problem is between the headlight switch and the fuse box. (If you know these cars, W123s, you know that there is a giant maze of wiring under the dash right in this area! There are also a couple of electrical component boxes there as well. The color coding, at the switch, for the low beams is white wires with a red stripe. Yet, it appears that the wires coming into the fuses are yellow. I am hoping that someone has had this problem before and knows how to fix it. My thinking is that there is something wrong inside of one of the component doxes. Any ideas?
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2005 C320 4-Matic 85 300TD wagon with the third seat; I am slowly restoring it. 99 E300 TD |
#2
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From looking at the wiring diagram, it looks like the wires for the headlight (possibly white/yellow) make a stop at the dimmer switch before moving on to the fusebox. You might try checking that.
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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress. |
#3
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Thanks, Skippy, I will check that!
I just added this car to my alldatadyi.com account and see the wiring diagram. It shows the brown ground wires, on both sides, coming right out of the headlight boxes and then attached to the engine compartment. I am going to take them off and clean them. That could be an issue also. I will also check the dimmer switch. Thanks again, Paul
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2005 C320 4-Matic 85 300TD wagon with the third seat; I am slowly restoring it. 99 E300 TD |
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