A-Team Performance 170072A HEI Distributor Battery and Tachometer Pigtail Harness 12V A-Team Performance 170072A HEI Distributor Battery and Tachometer Pigtail Harness Eliminates the need for obsolete spade terminals that can fall off and kill your ignition. Color coded to make it easy to identify the tach and battery connections. Locking tab and shark fin ensure a tight positive fit and a reliable connection between your wiring and HEI. Made of high temperature plastic rated at more than 250 degrees. Two 7" leads for easy installation and a clean connection.