I apparently am short on signal strength. I am currently using the tach lead behind the alternator to operate my Aeromotive fuel pump controller. This signals the controller just fine, and my factory tach still operates. Now, I decide to install a Autometer 5" memory tach. Everything is plugged in---and the new tach works fine........but the FP controller will not pick up a RPM signal, and the factory tach does not operate. Disconnecting the Autometer tach restores the signal to the controller and factory tach. Guess I can not run both items off the same tach signal. What are my choices? Is there another signal source? Is there some type of signal booster/amplifier? Can the factory tach be disabled to reduce draw? Wires are everwhere, and I would like to get this figured out. Any help would be great. Brian