I use a TourMaster heated liner (although not as much as on previous bikes -- those 1,731 CCs put out a lot of heat on their own). That liner, on max setting, takes c. 7 amps. The dash cigarette-lighter-style socket has no problem dealing with that. Since before purchasing my XCT, I already had a coiled cord for the liner (coax on the liner side, Powerlet male on the other end), I bought this for the XCT: http://www.powerlet.com/product/ciga...socket-cable/3
. I plug my coil cord into that extension, drape it over the handlebar by the clutch-side controls, and plug that into the dash. Works fine, no problems blowing fuses. (I plan to add a Powerlet through the plastic of the left side-cover, but I haven't gotten around to that yet.)
The official specs -- http://www.victorymotorcycles.com/en...specifications
-- say that the XCT has "48 amps max output." Unfortunately, there's no mention of how much is already in use by the base bike. It also doesn't show an RPM vs. alternator chart. For instance, my Suzuki 650 Burgman scooter could handle my heated vest/liner and gloves just fine... except at idle, when my voltmeter would drop precipitously. So, I changed out the two 35-watt halogen bulbs in my Motolights to 5-watt LEDs, and that pretty much fixed the problem.
The only way to really tell whether you're running a deficit is to use an amp meter. Barring that, the Vics seem to have plenty of juice to spare to run heated gear, so I wouldn't worry about it.