Thanks, Coyote machine, for the detailed answer.
Re your DK40 fuse box, and mine. I have 4 or 5 "spares" in my panel, but darned if I can see any "fuse blade" slots in these spare spaces. I can't see the blade receivers in the front, or any wire terminals on the rear of these spares, when dismounted for viewing. I contacted my dealer regarding what I found, and their only suggestion was to splice a new wire into a suitable wire coming from the fuse box.
I am reluctant to use this method, and that's why I propose to give the add-a-circuit a try.
If you see that you have a fuse receiver in your spare slot, is there any chance that you could take a close up picture to post here?
Appreciated, sawmillman