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Old 11-05-2002, 09:19 AM
rmmagow rmmagow is offline
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Join Date: Apr 2002
Location: RI
Posts: 1,040
Serious Electrical Problem

Help. 83 300D 171000 miles.
I'm having external lighting problems and don't know where to begin trouble shooting. Directionals and 4-way flashers work fine as long as the headlights are off. With headlights on, 4-way seems to work ok and the left-turn directional seems OK. Right turn directional flashes as long as the brakes aren't applied, press on brake pedal while right directional is flashing and it stops flashing. Does not happen with left. I changed all rear bulbs, both sides, with correct wattage/type MB bulbs. Cruise, which uses the light bulbs for control is working OK. Headlights/foglights work OK, hi-beam is fine too. I need to start replacing parts but am unsure where to begin. Does the car have a seperate flasher for the directionals and 4-way or is it all in the same unit? Grounds for the rear lights look fine and tight.
Any help most highly appreciated.
Thank You.
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