Last week I was looking for a working odometer.  Found one on the Samba and
got the whole cluster.  I also have a working tach from a diesel van that
I'd like to get into the new cluster rather than the analog clock...My
current one with the broken odo also has a clunky clock...
  I think I can figure out how to make the water temp and the fuel guage
work, the one in the tach face..Hopefully.  I have somewhere a reference
about which pins in the plug work for those...but looking at the foils I
have around, I see I can actually follow the leads back to the plug and get
stuff working that way.
  But, where is a good place to take a signal for the tach?  Is there a
rpm-based signal anywhere up front or do I need to go back to the coil or
the alternator or the distributor and run a wire all the way up to the tach
from the engine?  Mine is an inline four, but the alternator, coil and the
distributor are the same as a WBX.  It has a Digifant II injection system.
  Anybody know?  I'd first like to test the tach using a test wire lead
first, to make sure I get good response before I bother trying to make the
other two "in Tach" gauges operable.. The only downside is the tach I have
only goes to 6k and my motor may rev a bit higher sometimes. sounds like it
maybe..I see no upper limit pin on the tach face, so I am hoping I can go a
little past 6k without breaking the tach...Not that I drive there ever, but
I have been known to wind the little inline up to keep up with traffic at
times.
  Don Hanson