Quote:
Originally Posted by daniel911T
My plan was to initially try the grey wire from the MSD. If that gives a problem, then I suppose I'll try the coil, and if that fails, then I'll go to the tach adapter. I just like simplicity, and really don't want the extra device or wires if I can help it.
Would the tach work if it was hooked up to the signal output of the distributor? 123ignition black wire, MSD white wire. Would that work?
That's how my pertronix unit is driving my tach right now. Seems to work great...
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Your tach works now because either:
A) You are running the Pertronix direct to the coil (without CDI / MSD), or
B) Your tach is ‘71 or later.
Pre ‘71 tachs need at least a 150V ’spike’. This is present on the coil primary but not on the signal output of the distributor when running CDI/MSD. Later tachs do work with the distributor signal so that could be an option for you.