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  #1  
Old 11-11-2011, 11:18 AM
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Upper console switch light source help

Where under the dash is the light source for the fiber-optic pins that light up the upper instrument cluster in a W123 300d. I see what appears to be fiber-optic pins that seem be be the source of light for the Rear dome light, antenna mast position, Moon roof and Rear Defroster. The lights are all out and when I pulled the panel to take a look I see optical cables.

Thanks

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  #2  
Old 11-11-2011, 04:01 PM
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It's located behind the AC control unit.
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  #3  
Old 11-11-2011, 05:50 PM
toomany MBZ's Avatar
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Yes, follow the fiber optic leads back to a "spider", pop the spider off and you'll see a light bulb.
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  #4  
Old 11-12-2011, 09:32 AM
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Got it. Thanks. It's tough to follow anything in the dash there is so much stuff going on.
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83 300D. Sold
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16 A4 sport line
10 Passat
83 Recaro Trans AM WS6 Bone Stock Survivor
11 Harley Ultra
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  #5  
Old 11-12-2011, 08:22 PM
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I think that bulb is also controlled by the dash light rheostat.
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  #6  
Old 11-12-2011, 11:23 PM
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Yes it is. It's ties to the same harness that supplies power to the Climate control.

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Mad_Matt's Current Stable:
Oil Burners:
09 Jetta TDI The highway queen @ 105k
83 300D. Sold
Gassers:
16 A4 sport line
10 Passat
83 Recaro Trans AM WS6 Bone Stock Survivor
11 Harley Ultra
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