Yes, all 86 and newer models have the full wiring for the tach even if
they did not come with one. This is because the 2.1 engines have a dual
switch "dynamic oil pressure warning system". The circuit board for this
is in the speedo housing and uses the same tach signal to decide which
pressure switch to use depending on engine rpm. No changes to the wiring
are needed to use any 2.1 cluster, tach or clock type.

Mark
vanagon dash nut

JordanVw@AOL.COM wrote:
>
> In a message dated 1/29/03 12:41:14 PM Eastern Standard Time,
> wasbrikoff@NETSCAPE.NET writes:
>
> > I am wondering how hard it would be to replace the analog clock on a 1986
> > Westy, with a 1987 dash that has a tach?
> >.............
>
> this is all in the archives..  you say your friend has a 86 westy and it has
> no tach?  im assuming its a non-GL westy weekender then as all 86 westy full
> GL campers had the tach.  anyway on the '84 down vans i know you have to run
> a wire up to the dash from the coil and swap the pin connectors around in the
> 14point pin connector that powers the inst cluster, but you might be lucky
> and the 86 already be pre-wired for the tach...   might as well try and plug
> it in, and see what happens.  if not, check the archives on this and it shows
> what pins to switch around and how to run the wire from the coil.
> chris