While changing my idle cable, I noticed a 3 prong connector attached to the upper motor mount, located directly under the tank (pix below). The wiring for it goes across the backbone and disappears into the harness on the other side. I could not locate a place to plug it into and both the shop and parts manuals have no information on it that I can find. From the looks of it it has been unplugged for a long time. I'm thinking it may be a circuit test access point but it seems odd that it's open to the elements. The battery was disconnected, so I don't know if it's hot or not. Anybody know what it's for? The bike is a 99 ultra with a M-M EFI, stock, except for a stage 1 kit.