I've got a set of hybrid gloves that can run off batteries in pockets in their cuffs or direct off the 12V supply - used them for the first time at the weekend while out taking photos at night at about -2 and windy and was impressed so am looking at socks or insoles to match and am very tempted by a jacket liner too plus the wiring harness for fitting permanent sockets for the power and controllers on the dash. The gloves and socks or insoles don't use many amps at all so really aren't an issue but the jacket can pull about 7 amps at maximum so the total can creep up, hence asking about any figures for the output. I have emailed Morgan and S&S but no reply so far...
I have a bit of a feeling that the alternator is probably similar to those designed for a bike with carbs and points ignition a long time ago, not one with fuel injection and associated pumps and electronics which likely want to draw a fair old amount to keep them going.
The gloves I've got are by Gerbing's and am looking towards more of their kit. I've got no connection to this lot but after the link you can see some of the Gerbing's gear.
http://www.poweredadventure.co.uk/gerbings-heated-clothing.asp 
