That wire is likely your problem. What year and model do you have? The
86 and newer models all have the tach wire from the ignition coil to the
instrument cluster, even the few models that originally came without a
tach. The earlier models do not have the tack wire although at least
some 1985 models have the green wire at the instrument cluster but the
wire ends near the fuse panel. To add a tach to one of these you need to
splice into the green wire and run a wire all the way back to the coil.

Mark

van man wrote:
>
> Volks,
>
> Still cant get the tach to work even after a
> installing a new (used) printed circuit.
>
> All of the wiring around the inst. panel including
> grounds seems to be ok.  However, the green wire that
> comes out of slot #9 on the wiring harness (for the
> tach, correct?)  is spliced about two inches from the
> harness.  The spliced wire goes under the van via a
> hole near the accelerator and travels all the way back
> towards the engine until it dies out...just hanging
> there attached to nothing (along with two other
> wires).
>
> Is this splicing off the #9 normal?  It doesn't seem
> so according to the wiring diagram in Bentley (but I
> dont really understand the diagram anyway).
>
> Should there be a wire somewhere from the tach back to
> the engine?  If so, where does it go, what color,
> etc...
>
> BTW - using a get no reading with the engine on and
> the positive terminal in the #9 slot.
>
> Thanks - at least I got the instrument lights working,
> didn't do anything accept poke around, but something
> musta moved...
>
> Jeff
>
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