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#1
10-26-2006, 05:32 AM
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Why do I have a dim bulb?
My left headlight has just gotten dim. Dim on both high and low beam. Looks like it is barely on. I swapped bulbs and it was still dim. The plug looked slightly burned. Do I need to replace the plug and if so, where do I get one? Fastlane doesn't list one that I can find. Or could it be something else?
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 Muleears '07 E320 Bluetec 133K my DD '04 Jaguar XJ8 VDP, 34K '10 Hyundai Accent 60K Grocery Getter '02 VW Golf soon to be on the road again '97 E300 Diesel Son's DD '61 VERY tolerant wife Hampton Roads, VA USA Gone but not forgotten: '67 250S 95K '86 300SDL '87 300D Turbo, 364K! R.I.P. '98 E300 Turbodiesel, 213K '02 S420, 164K '01 Prius 138K Last edited by muleears; 10-26-2006 at 06:59 AM. 
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#2
10-26-2006, 05:56 AM
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that is usually caused by a ground circuit issue, check for loose or corroded grounds on that light wiring
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#3
10-26-2006, 09:02 AM
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The connectors on that style headlights were known for melting as well, but I agree, high and low beams doing it indicate a ground issue.
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 1980 500SE/AMG Euro 1981 500SEL Euro 1982 380SEL 1983 300TD 1983 500SEC/AMG Euro 1984 500SEC 1984 300TD Euro 1986 190E 2.3-16 1986 190E 2.3 1987 300D 1997 C36 AMG 2003 C320T 4matic past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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#4
10-26-2006, 12:48 PM
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On the 3 wire plug one wire is for hi beam, one for low and the third for ground, the center wire is ground. Trace this wire to its ground and clean this connection. If thats not possible, splice in a new wire just behind the plug and run it to a clean bare metal connection like the stud that retains your side parking light.
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81 300CD (sold) 1972 280 SEL 4.5 (sold) 1966 250 S 4 spd (sold) 1974 450 SL (sold) 86 BMW 325ES (sold), 1973 280C (sold) 1988 300 SE.
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#5
10-26-2006, 05:13 PM
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dim lights
dim light are caused by high resistance in the circuit. Something in the circuit is adding more resistance, probably corroded or dirty connectors. Clean the connectors with sand paper.
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#6
10-28-2006, 12:25 AM
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Quote:
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Linear Mode
