An old school variation on a power commander, basically.
https://www.centechwire.com/Auxiliary-Fuse-Panel-AP-2.htm
Also bought their relay. Good instructions included, I think my old High school electronics class (45 years back?) will get through making the correct connections. It is the physical end of it that I am hung up on.
I had read through your earlier posts, thanks for sharing! It all helps. I did find the aux plug tonight, and I recall you saying where you could get a mate. But I think with this Centech, I can just send one wire to the battery (well, one red and one ground). That will go to the new fuse block.
I don't recall, is your bike an ES? Apparently the additional electronics really fill in the area under the seat. I'm not ready to go drilling into something plastic until I know what is beneath it.
My other options for local help include a kid that works at the dealer, he informed me he got straight A's in electronics. Not sure he even needs to shave yet. There is a custom chopper place up the street, I may chat with them again, but I doubt this is their area. And then, there is an excellent fellow about 25 miles South of me, unfortunately, he is moving, and will not have his shop together for some time yet. He is also short of time for a while. (Divorce? Dunno, but he had one hell of a nice place!)
For now, I will leaf through the shop manual some, and look at powering the Zumo from the factory socket, for vacation at least.
-Dan