Hi Mellow,
Although I've managed to hook up my GPS on switched power quite easily on my St1100, I still consider myself as a big zero when it comes to electrical, which is why I find this thread quite useful. As far as my 1300 goes, I ran the wire (which I hooked up to a fuse) from the handlebars to the OEM fusebox and tapped it to the red/green wire. Quick and painless, thanks to your pics. Now here's my stupid question: where do I hook up the ground? I've read in the pas that green is always ground on Honda's, so do I hook up to anything that's green?