I will be putting an accessrory plug on my bike soon. All the plug amounts to is a couple of wires that you attach directly to the battery terminals. The two wires join in a plug for whatever you want to power. I plan to use some Widder electric stuff, mostly because it is the lightest draw on the charging system of any of the heated clothing that I can find. I don't plan on running much more, because the TT600 doesn't exactly have the Grand Coulee Dam for an alternator. I have seen BMW riders wired up with a GPS, a radio, auxiliary lights, and I don't know what all else. I guess big touring bikes have truck alternators in them.
While we are on the subject, anybody know anything about battery powered radar detectors? Do they exist at all, which ones are good and where to find one assuming that they do exist?