In my TD conversion (1987 Syncro), I located a tach from a '85-'93(?)
Jetta/Golf II, which slips right into the cluster where the original was. My
understanding is that there is an internal difference in the tachs. The 'W'
wire is the signal wire to the tach, just as the coil pulse wire was to the
original tach. I also modified the faceplate from the diesel tach to accept
the Vanagon's fuel and temp gauge, as the diesel tach only had a spot for
one aux. gauge at the bottom. I used the bottom half of the gas tach face,
and the upper half of the diesel face, sandwiched together. Looks almost
factory, just a small line where the two meet.

As for the glow plug LED, I just plugged in one more (yellow, from an old
Rabbit dsl. cluster) and a resistor (from same) which I attached to power up
an unused LED circuit on the foil circuit board. Looks like it was born
there. Let me know if you need further info.

Karl
'87 Syncro Westy 1.9 TD

----- Original Message -----
From: <KENWILFY@AOL.COM>

> I would like to know if anyone has installed a later model Vanagon
instrument
> cluster into a diesel Vanagon and if they had any problems getting the
tach
> to work and also how they setup a glow plug light.
>
> I have read that you use the "W" terminal from the alternator as your
signal
> for the tach, can anyone confirm that this works with the Vanagon Tach?