I HAVE A USED FORD MOTORSPORT M-12199-A351 ULTRA CD IGNITION BOX (BLUE IN COLOR) THAT WAS MADE BY MSD FOR FORD MOTORSPORT BACK IN THE 1980'S. I'M INSTALLING IT IN A FORD DURASPARK II APPLICATION.
THE BOX DOES NOT HAVE A TACH OUTPUT TERMINAL. MSD ADVISES TO HOOK MY TACH TRIGGER WIRE TO THE BLUE WIRE COMING OUT OF THE IGNITION BOX. BUT THERE IS NO BLUE WIRE. MSD DID NOT RESPOND TO MY ADDITIONAL QUESTIONS. FORD MOTORSPORT DID NOT RESPOND TO MY INQUIRY AT ALL.
DOES ANYONE HAVE AN IDEA OR A SCHEMATIC ON THE TACH HOOKUP FOR THIS BOX?????
THANX---FORDMAV