Convert 6 cyl tacho for use with 4 cyl

[Daniel Houlton]

Peter Gargano wrote:
>
>What's the best way to convert an analogue electronic tacho,
>set up for a 6 cylinder, so it reads correctly for a 4 cylinder.
>Assuming there is no access to the internal electronics, just the
>external signal from the coil. (logically, the tacho requires 3
>pulses for every two pulses the coil generates).
>

I've done this with an Isuzu instrument cluster.  The tach on 
that has a pot that you can adjust the tach with.  I just hooked
up a multimeter that read rpm correctly and adjusted the pot in 
the tach to match.

Your's may have the same kind of adjustability.


--Dan
houlster at inficad.com
http://www.inficad.com/~houlster/amigo.htm
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