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Old 05-02-2011, 08:22 PM
mobenz's Avatar
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Join Date: Sep 2006
Location: SW Missouri
Posts: 103
Instrument cluster lights

My 1984 300TDT has lost the cluster and control panel lights. I have replaced the fuse (#12), and all the other devices that utilize that fuse are functional, but no lights in the instrument cluster or any of the other lights on the dash, such as the climate control, accessory buttons etc. What else could be the culprit?

Thanks in advance.

"If we can't have fun while we're here, we might as well go to the house".

1978 300CD
1985 300TD
1999 Land Rover Discovery II
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Old 05-02-2011, 08:25 PM
tyl604's Avatar
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Location: Atlanta, GA
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This may sound silly but have you perchance turned the dimmer all the way up? The one for your dash lights.
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Old 05-02-2011, 09:35 PM
1980sd's Avatar
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Join Date: Apr 2011
Location: Elavil, Ga.
Posts: 910
I've had two bad dimmers on '80 300SD's which caused the same problem. Maybe turning the knob back and fourth would help?
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1980 300SD
1980 300SD
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Old 05-03-2011, 08:28 AM
toomany MBZ's Avatar
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Join Date: Nov 2006
Location: central Va
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Yeah, the dimmer switch is the usual culprit. You may be able to solder a jumper wire in back to keep it on full when the lights are on.
83 SD

84 CD
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Old 05-03-2011, 03:53 PM
sjh sjh is offline
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Unless using the dimmer is important to you I would second toomany MBZ'z suggestion.
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Old 05-03-2011, 07:34 PM
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Join Date: Dec 2005
Posts: 417
Even having a dimmer pot on these things is kind of funny! But I'm sure not very when it isn't working.

1981 300TD - daily driver
1963 Chevy II
2001 F-250 7.3 Power Stroke
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