I have seen a bunch of questions about Mast Wiring over te last few months, and I can dispell a few rumors now. Its no fun. Fortunately my mast is on the deck, unfortunately all of the old wiring was coiled (not so neatly) at the bottom of the mast and I had to pull with needle nose pliers and cut it out in six inch increments. The bottom of the mast is not coming off, I think someone used 5200 on it and the screws had to be drilled and retapped. The opening in the bottom is about 1 1/2" by 3" (not a lot to work with). I used a plumbers snake to pull two lengths of nylon line to the top. I pulled some 18/4 wire and a RG-8 coax all the way to the bottom, and then fished out the steaming light wire through the half inch hole in the mast. I measured carefully and left a loop at the steming light point before I pulled the cable. I used 6" pieces of pipe insulation every 2 feet to cut down on the mast slap (hopefully). The foam is taped to the cable. I used screw on wire ties at the top and bottom, all the connections are crimped, soldered, and have adhesive heat shrink. New lights and new antenna installed. I had to fabricate a new windex braket to move the vane outboard 3 inches (hopefully it will be easier to see as well). Not a fun job at all, and when you put the mast head back on, make sure the cable isnt in the bolt hole when you push it through or you can start all over again. Trust me, I know. I already installed new waterproof connectors on the deck, one for the coax and one for the lights. New waterproof connectors on the cable ends where they exit the mast about 4" above the cabin roof. Now I just hope it all works. By the way, there is no wire chase or conduit inside the mast, its wide open, except for the bees nests, frayed rope, old wire, and 29 years of dirt. Enjoy.........