If you have a tach, I think this is what you want:
http://bostig.com/index.php?option=com_content&view=article&id=330&Itemid=24
7  Not cheap, but making a mistake with other methods will cost a lot more.

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Jamie Fitterer
Sent: Friday, September 21, 2012 1:36 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Insturment Cluster

Hello,

I have an instrument cluster I bought from someone off the list YEARS ago.
Thing is, I can't remember if it is  84,85,86 cluster.  It has  TACH.  any
way to know what year it is from?   The reason I asked is I have a bostig
conversion and want to upgrade to this cluster to get the TACH in dash.  I
also need to know if 84,85 or 86 as 84 and 85 do not require Bostig's TACH
modification as the 86 and newer does.

Thanks
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