Dyna S Ignition
Fits: Suzuki GS 550/750 1977-1978 "KD"

The pictures are provided as an example. It could be that your specific will have a small alteration to make it work on your bike.

Dyna S DS3-1 Electronic Ignition GS550 GS750. Dyna S Ignition System is a complete self-contained electronic ignition system built with the latest state-of-the-art engineering. This is the same ignition used by top racers over the past 2 decades. The Dyna S is completely housed behind the ignition cover and uses a magnetic rotor with the original spark advancer, so the factory advance curve is maintained.

The amazing Dyna S ignition System is a time-proven solution to the basic ignition needs of the vintage muscle bike. As a stand-alone ignition, the Dyna S is the standard of performance and reliability.

Utilizes a magnetic rotor with the original spark advancer, maintaining the factory advance curve
Allows individual cylinder pair timing adjustment
Replaces points and condensers, as well as many original electronic units