I bought a mallory tach from a guy locally for a few bucks. So I gather from the wiring that red is 12v ign hot, black is ground, white is backlight....... I've got all these hooked up and functioning...... and the green wire is the tach signal. Already found on from the website that the built in rev limiter on the tach will not function with my mallory hyfire vi-a box ( go figure lol ). Anyways I'm not sure where I should connect the green tach wire to.......... I have two free wires on the hyfire ( green and purple ) directions show that they are for other types of dizzy...... Oddly enough I've never hooked up a tach before and I don't have the slightest clue lmao. Thanks
According to these instructions, your tach connects to the Yellow wire on your HyFire 6A box: http://prestoliteperformance.com/me...e_ 6A_6AL_wiring_diagram_6852M_6853M_0001.pdf
