Wonder if I might have some other issue as mine is way off.  My cable is going bad?  

 

How would one check the possibility of poor Engine/transmission ground?  
 
> Date: Tue, 13 Apr 2010 20:20:20 -0400
> From: dbeierl@ATTGLOBAL.NET
> Subject: Re: 1984 Speedos
> To: vanagon@GERRY.VANAGON.COM
> 
> At 08:14 PM 4/13/2010, Joe T. wrote:
> >No way! My cluster is out of an '84 Wolfsburg full Westy and the
> >speedometer has always been way, way off. I just thought it was a
> >problem with that particular speedometer. Learn something new every day.
> 
> Also bear in mind that a poor engine/transmission ground can pass
> enough current through the speedo spring to ruin its temper,
> resulting in a gauge that reads high. I forget the page in Bentley,
> somewhere in the (lousy) instrument section no doubt.
> 
> Yours,
> David