I am needing to go up the mast to replace a mast head light and need to get a replacement bulb before I do my first ascent. I have queried seasoned vets about going up a mast and will have both a bosuns chair and safety harness on a separate line. Along with 2 dock apes on the lines. Does anyone know what the replacement bulb could be on this boat? I have two calls into Catalina Yachts but no repsonse from anyone. thanks