Pete,
I stopped by Radio Shack to look at the strobe. Is it the one that looks yellow with a plastic base with two ears with holes for mounting? How did you attach it, and do you have it vertical or pointed to the rear as the guy on the website showed?

I guess two things I am most concerned about in all this are 1) waterproofing the connections and 2) mounting thinks so that the vibration and hard shocks don't snap things off or shake them to pieces. For splices that for whatever reason can't be put out of the weather I am going to look for the liquid tape or some of that stuff that you dip tool handles in. Seems like it should work and provide a tough coating. For connections I am getting some trailer lighting connectors. Those things should be pretty weather resistant, and you can get made up cables for just a few bucks. I found them at etrailer.com, but I am sure they are available at boating places. As an added bonus you can get from meci.com for about 5 bucks a little battery charger with the standard 4-flat trailer connector. I already have one that I have been using.

Another item - harborfreight.com has a submersible light for about $8. It is 12V and appears to take either MR-11 or MR-16 lamp. I have ordered and will report on it when received.

OK, enough drivel for now.
Regards,
Raymond