I shorted a replacement turn signal and burnt out my alternator a number of years ago...
Was this on a SOHC4? Those alternator are self limiting, you can't pull out more than they make and they don't make enough to burn themselves out.
I'll tell you the story!
It was about 8 years ago... on my CB550.
I broke the side marker, right? (dont ask)
So I got a new one off ebay or something.. and I put it on. It went on fine, but I noticed it DIDNT BLINK. It just stayed on when I flipped it to that side.
Although I was annoyed.. I let it ride for a while, cuz I was busy and I like riding and I didn't need it too blink that bad.
Eventually the bike dies. Dead alternator.
I put 2+2 together, and I pull that marker apart... seems when they made the thing, one of the wires got pinched in the housing. It wasn't severed, but the chrome and the copper were touching. I rewired it, and it is still on my bike to this day.
Had to replace that alternator, though.
You tell me? I am only an egg.