dr 600s 1989 [not condensor]
 

little black box 1 inch square says nippon denso on it ?:oops2:

Nippon Denso make a huge amount of electrical components for both Japanese & European built bikes.

At 1" square (or cubed?), it sounds more like a relay to me?

It's neither the condensor or the CDI box. Take the part number to a Suzuki to ID it.