Part#: 17-127A, Tri-Spark, Trident/Rocket III, Under Cover Electronic Ignition, Without Black Box
"TRISPARK TRIDENT NEW DESIGN, UNIT FITS UNDER POINTS COVER, NO EXTERNAL UNIT REQUIRED
The Classic Triple has all the ignition performance you need for your Trident or Rocket 3 – WITHOUT THE BLACK BOX. Simplified installation with superior running. Advances in technology have enabled us to build a high performance sequential firing system in this compact design with only five wire connections. This high precision system with built in self test button is tailored exclusively for the Triumph Trident, BSA Rocket Three, T160 and Hurricane machines. Easy starting and a smooth idle are retained from our original triple system which BTW will be available well into the future. Compatible with cylindrical 12 volt coils (6 volt coils if a ballast resistor is fitted). NOT to be used with miniature coils.
Uses (3) 12 volt coils not included. Each spark plug is independently fired. No wasted spark as competing units."