Well, I have spent the last 1.5 years on other projects (or sailing!!

) in my time on the boat and have not anchored at night, so did not complete this project - but now I'm going to get it done. I have 5-conductor boat cable through the mast (in case of future upgrades - will be useful) and the new deck connection ready to go, but I'm stuck inside the cabin.
As Dave Condon noted, my 1994 H26 is different from the 260 in some respects. In the first photo, the cabin light wires are blue/black and mast wires are longer green/black. In my case, the mast wires do come through blue flexible wiring conduit in the area under the mast deck connection (1st photo - but you can't see the conduit because it's too short), like Regular Guy. However, there is no tracer line - just wires. Also, the conduit is plugged with some very firm sealant such that I think I might destroy the existing wires if I try to dig them out, and it is pretty tight so I can't pull it out much to work on it. I cut the ~3" x 3" hole you see and don't want to go much bigger and not sure it would help anyway.
I have a fiberglass wire pulling set and tried getting through that ~ reinforced athwartships channel you see (2nd photo) and could not. Despite a lot of gyrations, it stops there whether I tried to get through from fwd to aft or aft to fwd.
Options: (1) I might try again to free the existing wires from the conduit, or drill a hole in the cabin roof further to starboard to get at the conduit in another location. I think that would be only guessing at success and guessing the conduit runs the whole way, and it would be heartbreaking if existing wires break while pulling the new larger wire. (2) I think I'm going to need Dave to explain where he drilled his holes - then I could do it once and with confidence.
Recommendations greatly appreciated. I'll submit owner mod photos when complete.