you can get them just abot everywhere. Last time I got one, it was at a local store here in Maine. There are diffent sizes and colors, but make sure you get the right size. AC charger , whats the draw? try this link
http://store.hamiltonmarine.com/browse.cfm/2,596.html check it out .I would think about 15 amp for the ac side and put a inline fuse on the output somewhere around 50 amp. it's allways inportant to fuse everything. Something else make sure you use tined wire and waterprof connectors. I use grease on my wire and still use the heat shirnk tube connectors. On the (-) bus same but cover with liquid tape, clean it with a wire brush befor connections, then paint on the tape. hope thats helps
