First time on this forum posting a question...really enjoy all the advice I have recieved just by reading but haven't seen this one yet. I have twin 90 merc outboards and have a two battery system with two Perko battery switches. Could someone show how this system is supposed to be connected correctly and do I have to worry about two alternators throwing out charge? too much? Also, the batteries are located aft, under the fuel/water seperators. I would like to move them under the center console for better water protection/less gas on them when i need to change the filters. This is about an increase of 8 feet. What gauge wire (#6?) would I use and should I tie it together with a buss? thanks again for all the cululative knowledge and help you give. We all appreciate it.