The problem with installing a tach in these cars is the type of ignition
system. Since it has what is called a "double-spark" arrangement, you need a
tach that has a setting for two cylinders. The only add-on tach I could find
with that setting was a very expensive 14000 rpm motorcycle racing tach. So
what I did was get a recycled cluster and stick it it. They're not expensive
or hard to find, and fairly easy to install, but the problem is the odometer
reading will be off.
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