I'd be inclined to get some LED Christmas lights and run them off a small cheapinverter. I saw some 50 bulb LED strings at Lowes for less than six dollars. I think the 50 bulbs made a string about 12 feet long.
Retired from Hopkins-Carter Marine Supplies
Count the bulbs in the string. Some strings are split in the middle. Divide by 120 will give you the voltage of each bulb. Divide that into 12 for the point you splice into the single wire. ( Usually some where around 2.5 V ). Mike
Location: Malvernshire, on the sunny side of the hill.
Boat: 50' steel canal and river cruiser
Re: Christmas lights.
I went to a DIY store and bought a string of solar powered garden lights. They self charge and are weatherproof. Ive had them strung from bow, up to masthead and down to the stern for 15 months. They look great and are self sufficient.