KEEP ALL IGNITION SYSTEM WIRES AS FAR FROM SPARK PLUG WIRES AS POSSIBLE. .your vehicles distributor and coil (see diagrams for more information). For optimum performance use the Mallory PROMASTER® Coil Part.No.. The Mallory HyFire® Pro Ignition features a Gray Tach Output wire that provides a trigger signal for tachometers, a shift light or other add-on rpm activated devices.
NOTE: If you are using an aftermarket ignition control, such as a Mallory HYFIRE® Ignition Control or similar, follow the wiring instructions included with your ignition control box.. For applications triggered by points, Mallory Electronic Ignition Distributor (all models), original equipment electronic ignition amplifiers and magnetic trigger pulses (magnetic pickup distributor or crank trigger ignition).