MCOYOTE......tell us more about this heated liner? Plug it in? Where? Is it "battery" operated or do you plug it into an outlet and the heat stays in the jacket for a spell while you are riding.
Details please....
I come from a dark and evil land (Beemer country) where if you want to hang you have to be able to ride in any weather. Last winter when I was riding to work WHILE IT WAS SNOWING for the SECOND DAY IN A ROW I had my heated gear on and was thinking I was da man when lo and behond, flying off of a RT50 ramp with his sidecar in the air, was a dude riding a K100 wearing (I sh*t you not) a full length duster, a short helmet, and a pair of goggles.
I was humbled.
That having been said, I have a Gerbing's electric "jacket liner" and a pair of their heavy electric gloves, which plug into the jacket. Many days when the temperature is only around freezing, I can just wear the gear without plugging it in because it insulates well all by itself (at least when I'm doing a half-hour commute). I actually got this gear when I had a BMW so it already had the standard "Euro" BMW breakaway-cigarette-lighter-like plugs. As a result it made sense to me to install a jack for this stuff on my 'Busa.
A company called Jastek makes a very well put together, weatherproof jack, wiring, and fuse combination that you wire into your battery and mount on your inner fairing (one of their "sportbike specific" kits). I drilled the 11/16" hole myself first but didn't realize I should've started from the back and scratched it up. I replaced the fairing piece for about $25 (it's the black, textured stuff, not painted) and had the shop do it on their press. The Jastek kit itself is about $30, and will probably outlive me.
The advantage of using a jack is that you can't get hung up on it -- the plug will (probably) pull free if you walk away from the bike and not knock the bike over, but it won't cause you grief in an accident in any case. Plus, it's more water tight than a standard cigarette lighter plug and jack combination.
From extensive testing (by other people) on an '02 SE 'Busa, two of these liners (77w each) may be supported by the charging system, without killing the battery, so long as you don't use your high beam. With just the rider, you can safely use a liner, the gloves (12w), and maybe even the Gerbing's pant liners with the high beams on. It's been my experience, however, that the most crucial bit to keep warm is the torso followed closely by the hands because there's no wind protection on the 'Busa -- the body's core will keep the rest warm if it is itself toasty.
If you do lots of really cold winter riding and end up in traffic a lot, incidentally, you should consider getting a voltmeter installed on your 'Busa to keep an eye on the battery -- it has a large alternator for a sport bike (550w, I think?), but it's still not suited for a very heavy load at low engine RPMs. In any case, I have ridden for five hours on a sub-freezing day with this rig and good socks and really only had to worry about deyhdration -- nice and comfortable, all over. Definitely good for extending the riding season.
Oh, and IF you do this strongly consider Gerbing's or the BMW brand gear -- it's not that expensive as gear goes -- the heated vests by Widder and some others really suck. Oh, ALMOST FORGOT -- another nice thing about installing the jack is that several brands of battery tenders come with "Euro"/BMW plugs, so hooking the bike up to AC after a trip or whatever takes just a "click".
<!--EDIT|mcoyote
Reason for Edit: "fergot stuff"|1068607458 -->