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Old 03-07-2005, 01:46 PM
MDF MDF is offline
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Join Date: Nov 2004
Location: Orinda, CA
Posts: 25
Dash Lights Intermittent (Not Rheostat)

On my '84 300D, the instrument lights and the lights for the climate control and window switches are not working. I replaced the old rheostat (has a broken wire) with a new one, but still no lights. Once in a while the lights will suddenly come on, but not consistently at all.

The archives seem to point toward rheostat and fuse issues, but I have ruled these out. Any ideas for where to look next? Thanks

'84 300D
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Old 03-07-2005, 03:05 PM
billrei's Avatar
W109, Floating on air!!
Join Date: Jan 2005
Location: Goleta, CA
Posts: 556
I would check the multipin connector that connects to the back of the panel. Could be that one of the pins is corroded or sprung open. I would also check to see if the connector has power so you can determine if the problem is upstream or downstream. I don't have access to the pin layout in the connector perhaps someone can direct you to it. It can't hurt to check the grounds bolted to the chassis behind the panel.
Bill Reimels
Now down to one:
1972 300SE 3.5 W109 (Euro delivery)
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