Ya forgot to mention the 10 ft. ground rod! Ooops sorry, thats for houses!
Quite a while back I had battery draining problems. Was only reading 10V across the battery while running, thats no good. So I realized I had a ground leak somewhere. I got my buddy to help me troubleshoot and we couldn't find the source. There is always a quick and dirty fix for everything. We resorted to a large wire (actually a pair) going directly from the alt to the pos. battery pole. Everything works fine and that was about 6 yrs ago.
