Adding a deck light
Another MacGyver trick......If you have a steaming light and wish to add a deck light you can do so by adding a couple current steering diodes to the light assembly and a toggle switch down on the electrical panel. I did this on my 525 over 10yrs ago. The beauty is that you don't have to add additional wires in the mast for an extra circuit. The down side is that you have to select one light or the other, not both. The amp rating of the diodes used must be greater than the amp draw of the lamps. For my application I was able to use 2amp diodes due to a 20Watt deck light. The double pole , double throw switch needs current rating greater than the current draw of the lamps. The switch just changes the polarity of the voltage on the wires and the diodes due the current steering..
Cal 9.2 #19 SilverSwan