Solar Vent & Solar Panel
Solar Vent
The cabin had a plastic cap in the cabin top.  It was a Nicro product.  I  popped out the cap and installed a Nicro 2000 Solar Vent. It was a perfect fit !

Solar Panel & Solar Controller
This is a Kyocera 20 Watt, 1.2 Amp,Solar Panel.  The panel can be inclined to either side as well as the back of the panel can be tilted upwards toward the bow or down toward the transom. The panel produces max rated amps when it is facing  90 degrees (perpendicular) to the sun. If the panel is adjusted so that it is horizontal (flat), then it only derives partial power  (.6-.8 amps).