So happy you got it figured out!! :cooldude:i KNOW ALL ABOUT ELECTRICAL FRUSTRATION.. gonna have that real soon dealing with my alternator...

It was the Smart Switch after all! Rob was right, the OEM plugs were under the fairing, and very tucked away and hidden. IMHO -- at least if you're running LED bulbs -- the Switch is unnecessary. This one was filled with silicone all around the relays in an attempt to waterproof it. It obviously didn't work. I haven't dissected them yet.
I'll try to remember to post pics tomorrow. I'm guessing the corrosion had already begun and washing the bike the other day was the last straw.
Thanks very much all for your help with this wild goose chase!
Now back to the Silver Bullet.

Just swapped out an alternator on the Bullet early this season. Went better than expected, with minimal cursing -- which is not par for the course for me. I think what made it easier was taking my time and using a mechanic's pry bar.
Took the gamble and found a used one on eBay for $60 that it's putting out 14.4 v on idle.
Trick for me was making sure everything was aligned, then using one of my pry bars to push it in from behind. I imagine a piece of 1x4 could maybe be used in a pinch. Just make sure your pushing it from the center and straight, not at an angle.
I also discovered inserting the replacement alt with front facing down outward (rear held higher and angled up toward battery box) got it in position easier. YMMV. I did not remove the center panel per the service manual. I think that would only make the job more difficult getting that off and back on.
If there is too much resistance check that the alternator splines are aligned directly over the gaps between the rubber bushings before trying to force it or you can break the bushings apart.
If it pisses you of really bad walk away for 15 minutes and try again. Again, don't force it, if it's not going on it's probably just not aligned properly.