Thanks for the quick reply! Also I'm glad I was right. Almost makes me feel like I know what I'm doing! Is that a "pull the motor" job to replace or can I just move the swing arm (equally nerve racing to me)? If I'm already there, should I just go ahead and throw a 40 amp in? Only accessory I intend to run is a set of heated glove liners. I think 28W max but at max setting, my hands sweat even below freezing temps so I'm thinking the real world load will be closer to 20W so roughly 1.75 amps
The engine can stay in place. You will need to take her ass off, literally, including the swing arm (there is a tool for the special bolts that hold it together, I got mine on Ebay).
Consider it a grand opportunity to clean stuff and catch up with backhalf lubrication.
I have a 1991 model. I have never used electric accessories but imagine you need to be judicious and install anything you add with it's own fused wiring...just ask about wiring your particular product on this site.
Once disassembled, you should replace both o-rings, it's just a good opportunity to do the job once.
Notice where the wiring exits the aft side of the stator (back half of the alternator). The opening and wiring that pass thru are potted so they won't leak. But sometimes they do and its a next to impossible leak to stop. It's just difficult for new adhesive to hold given oil soaked wires and oil remaining between the potting and housing....just be aware.
DO...check the charging system wiring, part the connectors and check for corrosion and clean. If you have any evidence of 'slightly' burned wiring or connectors that must be fixed. There's a great aid called the 'red wire modification' that removes the connector and uses additional parts from the later 1100 years. Just search on 'red wire' using the feature at the top right of the page.
New 28 amp units are now hiding with the dinosaurs. So if you have a bad oil leak or the unit fails, it will have to be upgraded. Most of the early model owners will advise you to upgrade to the 40 amp model at your first opportunity. New and used 40 amp alternators are available, you will need the forward half of the 28 amp unit AND the mount plate from a 40 amp equipped bike. The mount plate is no longer available from Honda.
And...ask about any concerns. Again, there are how to's on this site as several members have made the upgrade successfully.