The Coil Power Taps are an effective and easy way to get Ignition 12v and Ground, from your coil harness. Perfect for alternator exciters, flex fuel sensors, or any other item. TPCOIL3PT is designed for aftermarket Smart Coils, also known as IGN 1A, Mercury Racing, and Holley Smart Coils. For newer LS and LT coils please see TPCOIL2PT, and for LS1 Coils, please see TPCOIL1PT.