[Vwdiesel] Tach

[HWY9FERGS@cs.com]

In a message dated 9/21/2005 7:10:28 AM Pacific Daylight Time, 
vwdiesel-request at vwfans.com writes: 
> You bet.  They typical "gas" tach works off the ignition coil pulses.  You 
> get 2, 3, or 4 pulses per revolution on a 4, 6, and 8 
> cly. engine.  On a diesel (at least a mechanically injected one) there is no 
> ignition system, no coil, no handy electrical 
> pulses to feed into a tach.  More info on my diesel tach page:
>     http://www.4crawler.com/Diesel/CheapTricks/Tachometer/index.shtml
> 
> -- 
>     Roger
I thought the W terminal was there to mimic the ignition signals.  If not, do 
you know what their intended purpose was?   Ferg