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#1
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No headlights!
Hope someone can guide me in the right direction.
I had my 86 420SEL A/C recharged yesterday at my local indy shop, and they said they couldn't control the compressor from the dash controls, but were able to get the compressor to run, and cold air was blowing, by connecting 12V to the compressor terminals. I guess they used a battery and jumper leads of some kind. Anyway, ever since they did that, I have no headlights. The (2) fuses look to be fine; is there a separate relay or something that might have blown? I am not sure the work on the compressor is related... What should I look for first?
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Simon Shearer 1986 420SEL 2000 Porsche 911 Millenium Edition Carrera 4 2010 Lexus RX 350 2002 Kia Rio 2002 Hyundai Accent Last edited by simonshearer; 04-10-2010 at 10:46 AM. |
#2
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Power comes from headlight switch, to combination (dip) switch, to fuses, to lamp module.
Do you get 12V to any of the headlight fuses, high OR low beam??
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#3
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Quote:
I will get the multimeter out tonight when I get home. Thanks.
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Simon Shearer 1986 420SEL 2000 Porsche 911 Millenium Edition Carrera 4 2010 Lexus RX 350 2002 Kia Rio 2002 Hyundai Accent |
#4
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No driving or tail lights
Can't detect voltage at the fuses.
Have no tail lights either although I do have brake lights thankfully. Seems I can't drive at night until I solve this conundrum.
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Simon Shearer 1986 420SEL 2000 Porsche 911 Millenium Edition Carrera 4 2010 Lexus RX 350 2002 Kia Rio 2002 Hyundai Accent |
#5
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...still no head or tail lights...
Quote:
I have dash and instrument lights; brake lights (inc. 3rd), turn indicator lights, rear side lights... but still no head or tail lights on either side. Headlamp bulbs look good; all tail light bulbs look good; the bulb-out indicator light has not come on. I'd be very thankful if anyone can point me in the right direction; what do I need to check next?
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Simon Shearer 1986 420SEL 2000 Porsche 911 Millenium Edition Carrera 4 2010 Lexus RX 350 2002 Kia Rio 2002 Hyundai Accent |
#6
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Headlight relay in the screwed down portion of the fuse box. Its the longest relay in there cant miss it. Go to a junkyard to get another they run over 200 new. It controls all the lights. Also known as the "bulb out indicator".
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#7
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Thanks!
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Simon Shearer 1986 420SEL 2000 Porsche 911 Millenium Edition Carrera 4 2010 Lexus RX 350 2002 Kia Rio 2002 Hyundai Accent |
#8
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That did it... I have headlights again! Many thanks.
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Simon Shearer 1986 420SEL 2000 Porsche 911 Millenium Edition Carrera 4 2010 Lexus RX 350 2002 Kia Rio 2002 Hyundai Accent |
#9
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Yep the cooling fins in the units have been changed and the newer you get the longer they will last, maybe soon they will all be electronic.
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