I'm not sure how easy the SP /Shimano connector is to connect and disconnect, but the spades used on the SON are not particularly convenient. It didn't take me long to figure out to add a set of pins & sockets in-line with the dynamo, just a few inches from it.

Here's a shot of what I did with my first generation SON....



the pins and sockets are from Amphenol... specifically, their AT series. They can be purchased from Digi-key.


Steve in Peoria