hello , i have a 1964 60hp v-4 , mag style evinrude that does not have a charging system of any kind , as an option this motor could be equipped with a generator , but i dont figure a generator , if i could even find one, would be a great solution , anyway my question is should i run two seperate batteries 1 just for starting and the other to run the depth finder, lights and ect or is there another solution ??? i am a newbie in the boating thing and any help would be appericated .................thanks !!