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Old 11-06-2004, 08:43 AM
Coming back from burnout
Join Date: Jun 1999
Location: in the Pacific Northwest
Posts: 2,274
Lightbulb Can someone info me on fixing the Fuel/Temp/Oil module on cluster 85 300D

The fuel temp oil module on the cluster is the brain and a few weeks ago the illumination lights went. When I pulled it I found a broken printed circuit path which I tried to fix with a jumper.
This worked fine, for a week, Then another path went, which I fixed with another jumper..all these paths come from the main plug which supplies the module with info...then another path went
The trouble is is that there are different grounding points in the cluster, I tried running my cluster illumination lights off of a jury rigged harness to the center console and now my cluster flashers dont illuminate (they still flash) because they are at a different ground level...
Anybody have experience in this area or matter?
Once I even fixed the clock by replacing a burned out resistor/diode , that was real subminature wizardy, but now I am stumped....
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Old 11-06-2004, 10:41 AM
Registered User
Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
Go to the junkyard and get a replacment, your's is cracked.

Be carefull when installing that you don't get something behind the circuit board flexing it.

1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
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