Thanks for this post!  This is why reply all is so cool.
I am working on my tach issue.  GPASC doesn't sell the
Tach Adaptor with the Compu-Fire ignition, so I'm in
the process of designing up a diode circuit to hook
up the two coils so that I don't read 1/2 RPM.
(Current problem de jour).
The note about a 1000ohm resistor is an interesting one
to prevent the tach shorting the ignition.  I know if
the tach sending wires are grounded, it will suppress
one half of the coil.  (Old story, but 1/2 VW sounds
pretty good).
I've got some recent KR photos getting placed on CD,
and my old n541ry.com domain is now mine again, so I
should have some new photos up by the end of the labor
day weekend. 
Subject: KR>Tach

> Bill,
> 
> The tach on my Renegade has a 1000 ohm resistor between the ignition system 
> and the tachourmeter.  If the tach were to go to a dead short, the ignition 
> system would never know it.
> 
> The tach on my KR is a capacitor pickup--the lead is wrapped for two turns 
> around one of the spark plug wires.  Yes, it does work with shielded plug 
> wires.
> 
> Most solid state tach have been designed so they can't interfere with the 
> engine spark.
> 
>                                             Jim Vance
>                                             
> Vance@ClaflinWildcats.com_______________________________________________
> see KRnet list details at http://www.krnet.org/instructions.html

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