VW didn't include a "tach wire" in the Vanagon harness until around 1985
when they changed the cluster over to using a Tach in place of the Analog
Clock (BTW - the color is green).  I'm getting ready to change my 84 Westy
cluster to an 85 w/Tach shortly, and I'm gonna have to string a separate
wire back to the negative side of the coil to make it work (I have a
four-wire roll of trailer harness I'm gonna use in case I wanna install
future "worry" gauges sometime later on).  Plus, I've gotta switch the
position of some of the wires at the cluster connection as per the archives
to make sure the other stuff in the cluster works too!  I've had the cluster
for awhile, just been too busy to get around to it.  Since I've no plans for
the upcoming couple of 3 day holidays, I guess now is about the time to tear
into it. Gotta do maintenance beford heading to Havasu for BBB XI, while I'm
at it.

If you're installing a separately mounted Tach, you will need to string the
sensor wire back to the coil to make it work.
--
Jim Thompson
84 Westfalia 2.1 "Ole Putt"
73 K Ghia Coupe "Denise"
72 411 Station Wagon "Pug"
oldvolkshome@gmail.com
http://www.oldvolkshome.com
*Have a Happy & SAFE Holiday*
**********************************
On 12/19/06, Nathaniel Poole <npoole@telus.net> wrote:
>
> I want to install a tach in my 80 and I'm wondering if volkswagen already
> has a wire in the harness that is used for an optional tach? Rather find
> this than string a new lead through the length of my van if given the
> choice.
>
> Nathaniel