Solar Maintaner.
I was walking thru Menards last weekend, and they had some 12V solar maintaners on sale, so I figured why couldn't I run these in series to get a 24V maintaner. These were designed to be attached to the windshield of a car, and then plugged into a cigarette lighter. I didn't want to have to attach these on the windshield, then run a wire to the batterys, so I figured I'd try this:
I had put a flag/ antenna pole on the 5 ton last weekend, for the 4th. This will have my radio and CB antenna on it, and also be able to attach a flag, when needed. I was going to put a cap on top of it, but figured, why not make an enclosure for the solar maintaners (I dont think they are water proof) and place them on top of the pole. Of course this is removable before driving the truck. I just made a Ghetto "NATO plug" out of the cigarette lighter plug, to plug it into the jumper.
I used a steel base, welded on rod to fit into the pole. Then welded a aluminum frame, and siliconed a Lexan cover over the solar cells. You can almost make them out in the close up. The frame is crooked, to allow water run off better.