Automatic Ignition Coil Selector

Two Posts Connect To The High-Voltage Towers On The Primary Ignition Coil And Backup Ignition Coil, While A Third Post Connects To The Distributor Cap. Switch From The Primary To Backup Coil At The Flip Of A Switch, Without Needing To Stop The Car. Requires Two Ignition Controls, Two Coils, And A Single-Pole, Double-Throw Transfer Switch. Accepts Standard 90° Or Multi-Angle Spark Plug-Style Boots.