Got a 2003 Night Train (EFI). Has a Pink tach wire OEM.
Bought an aftermarket tach..it has a set up that requires you to
set how many RPM signals per how many ignition signals.
My choices are:
A) 1 RPM signal per ignition
B) 1 RPM signal per 2 ignitions

There are serveral other choices not applicable (4,5,6 pistons)

Anyone have a tech manual or knowledge of the correct setting???
My Service manual has nothing about it.

Thanks...