Is there any reason the front
would fire every revolution when the rear only fires on the power
stroke?//
I did a lot of ignition research when trying to get my 10.5 to 1
conversion to run ping free and I believe it's a dual fire system
where both always fire together....had probs getting my aftermarket
tach to read correctly at first bc of the multi spark discharge, but
there's a "signal" wire in the harness for a tach, I believe...maybe
you can use the signal from that.

Wireless tach, huh...interesting...why on a bike?  or just a project
you decided to try on your bike?

kurt
my tach came in most useful when getting decibel checked..."just pump
her up and I'll test her.......Sir, how many rpms?...."...