12 watt Solar Panel (battery maintainer) Mounted on storage shed roof near boat. Took 50' extention cord and cut 18" off female end and attached it to a small solar controller (picture 3) in Lazerette attached to main cranking battery. Attached the long piece to the Solar panel. When connected (pic 2) I have automatic battery maintenance. I leave switch on both so the whole system is maintained. A small switch was added to turn off the battery combiner during solar charging.

12 watt Solar Panel (battery maintainer)
Mounted on storage shed roof near boat. Took 50' extention cord and cut 18" off female end and attached it to a small solar controller (picture 3) in Lazerette attached to main cranking battery. Attached the long piece to the Solar panel. When connected (pic 2) I have automatic battery maintenance. I leave switch on both so the whole system is maintained. A small switch was added to turn off the battery combiner during solar charging.