Anchor lights have to be the biggest pain in the neck. Waaaaaaaaay up
there on the top of the mast with slapping wires in the mast
fatiguing, corrosion, blown bulbs, etc. a masochists dream. I have
seen ppl hoist a 12V light with its power wires up high using a
halyard but the wire flops all over. This may be useless but perhaps
somebody can use it for something else. SO: Useless Idea #3732.

I once saw dacron 12 mm caving rope with 4 copper wire conductors down
the center. This stuff was made by PMI and I dont know its purpose
but maybe you could use it for halyards and use the wire to power an
anchor light.

Now that I really think about it, I cant believe I have put up with
something as dumbass as a mast top anchor light for years. I have
frequently used a battery powered light hoisted up high but sorta
worried that the mast "shadowed" it. With new LED arrays and
rechargeable high amp hour lithium batteries, a battery powered anchor
light may really be freasible. Is the shadowing a real problem?