These instructions for the Mallory #29074 Fuel Injection and Tachometer Adapter have been written / modified by Century Performance Center to provide a clearer understanding of how this component works, and how to install it. 

NOTE: Finding the correct adapter configuration with Mallory ignition products is sometimes tricky or problematic. If the #29074 adapter does not solve the problem, there are other ways to get the vehicle's tachometer to operate properly.