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Old 11-23-2001, 12:49 PM
Jeff Kruger
Posts: n/a
1988 420 SEL brake activation shorts out instument's

If anybody has experience with this I would appreciate advice.
When I hit the brake pedal on my 88 420 SEL the fuel,temp,pressure,speedo,tach, etc.. all go to zero until you release brake pedal then all go back to normal. There is a slight hum when the brake pedal is hit kind of like a resistor noise.
the brake lights don't light either when this happens.
this problem is intermittent, everything works normal then all of a sudden the problem occurs.
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Old 11-23-2001, 04:39 PM
Registered User
Join Date: Dec 2000
Location: Mt. Airy, Maryland
Posts: 116
I would check wires for worn insulation. It sounds like some wires are coming in contact with each other.
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