http://www.sailorsams.com/2-wire-2-...-with-Wind-Indicator-Illumination_p_3825.html
I installed this on my Cat 30. A little less than $400. I ran a 12awg 3 wire up through the mast. The pics are pre finish. I marked the wiring on the masthead, the top is the light, the bottom is the wiring running through the mast.
It works great, is highly visible and I love that it illuminates the Windex. The only thing I should have done is move the Windex aft on the masthead. I thought I needed to keep the Windex directly over the light, it doesn't have to be. When I take the mast down again, I'll have to replace the rod the Windex sits on with a longer one. Because it is so far forward, it is difficult to see...oh well.
I left the original running lights in, they are on a separate switch and I turn them on when the engine is running, this way I have double coverage...high and low. Hopefully, that is not a violation...
Chris
....after rereading your post, you're not really looking for this...sorry!