Fix mast toplight (task)
From MITNA
The light fixture at the top of the mast is broken.
It is believed to be an Aqua Signal Series 40 Tricolor/Anchor/Strobe light (12v, w/ Quicfits connector).
All three lamps are in working order (2 incandescent & 1 strobe). It may be possible to replace just the lenses to get the fixture working again properly. The Aqua Signal part number for the lens assembly is 40710-1.
Four wires run to this fixture from the base of the mast. These should be inspected for corrosion and replaced if necessary.