I like doing preventative maintainance on my '87 272, but dislike going up the stick for ANY reason. Since my Windex is in need of repair, it's probably a good time to replace the original masthead light bulb, while I'm up there and before it finally dies. I plan to use an LED bulb but have no idea what bulb style/number/base design is used up there and want to go up just one time. Anyone have a bulb number or other info, so I can purchase before I make the climb? Many thanks in advance!