Sorry for the delay, but it's done! (well mostly). I finally got the parts in and finished all my traveling for work so I had some time to finish this up and I am happy to report that it works like a dream. I have not mounted the socket inside the saddlebag yet, but the wires are there and I just need to epoxy the socket in place. I am going to test this out for a week or two before glueing anything into place.
First, here are a few pictures of the spring pins on the bike. They are very unnoticeable when the bag is off, and are not visible at all when the bag is on (picture of that later).
The next part was how to get the power contacts mounted to the saddlebag. I had a very small circuit board made up. It is literally just two big contact pads on the front that are connected to two big contact pads on the back. I used a dremel to inlay the board on the saddlebag and drilled a hold to bring the wires (soldered to the back of the board) up and then through a hole in the saddle bag.
Saddlebag back from a distance.
Close up of circuit board mounted.
Profile view of circuit board mounting (the board isn't glued in place yet so there is an ever so small gap)
Wire routing into bag.
The only evidence there is power going into the saddlebags when it is mounted is if you look though the grab rail you see this...
And lastly,
here is a short video showing that the power is switched on with the key and then you can see my remove the bag and then reinstall it (hard to do one handed and looking through a phone screen).