Welcome to the forum. Bike is a 1980 SG model. It makes a difference when your ordering parts, as some of the 79 stuff will not be the same.
Yes,it-s a Inductiv-capacitive senzor but don't work ...so,i decide to make this:What is the problem with the RPM sensor?
I'd guess it's probably an inductive/capacitive sensor that goes on a spark plug wire?