Maybe a relay problem since it changes when you messed with that
relay. I would try switching another relay of the same type from
another position and see if it improves. If not then look for a
bad contact on the back of the instrument panel. Possible loose
wire or even a broken trace on the board. A loose wire can make a
buzzing noise when the power sparks across the gap. Check all the
contacts in the plug on the back of the board.
Manfred
Message: 7
Date: Fri, 7 Aug 2009 16:47:28 -0400
From: "Bill R" <billr32...@comcast.net>
Subject: Re: [MBZ] Dash console dead - 1981 300SD
Guess I should get a bit more specific. The temp, fuel, oil pressure
[pegged at the top] speedo, tach and blinkers are dead. The
clock. odo and
flashers do work.
BillR
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