Yep, I got alot of spare parts. It took awhile and some classes and alot of reading till I figured it out. I wonder how large your out board alternator is and if it is large enough.
The motor is a 1983 OMC sailmaster for which I have no documentation. I am searching ebay to find an owners manual, service manaual and parts manual for that year -- so far without success.
The browsing I have done on the web tells me that the electric start 9.9's have a generator that puts out around 6 amps. Whatever it is, I have what I have. I wish I could go back to an inboard but the shaft and strut have been removed and the opening in the hull is glassed over. All I have left is a cockpit hatch and engine mounts.