On the subject of illumination.
This is a comparison of a 'Signal Dynamics' 3 LED unit compared to a fixture with a standard 1157 bulb. The 3 LEDs in the tiny fixture are directed 45* apart so as to spread the light
and while not as bright as the 1157, are remarkable.
<img src=http://www.fiberglassrv.com/board/uploads/3ed91fc001ea2Casita LED reflection.jpg/>
Current draw is .04amps
<img src=http://www.fiberglassrv.com/board/uploads/3ed91fe413148Casita LED amperage.jpg/>
compared to 1.51amps of the 1157. Don't take much of a solar panel
to keep up with that!
<img src=http://www.fiberglassrv.com/board/uploads/3ed9200dcd859Casita 1157 amperage.jpg/>
....but we're talkin about some pretty good light
at 38 times less energy useage, and the bulb ain't likely to burn out in our lifetime.
Color value of the LED is more 'blueish' than the 'yellowish' 1157.
Now, where to mount it???