Ron,
We removed and replaced the 10w halogens from the four overhead bins and the four reading lights. We installed 5w xenon bulbs in these. We read the xenons generate less heat (good in itself) and may therefore last longer. We use the overhead bins for ambient lighting and are very happy with the 1/2 lighting level and even more with the reduced power load on our batteries.
We're going to reinstall the 10w halogens in the two aircraft style reading lights at either end of the sofa. When Debbie is needlepointing or either of us are reading small print the brighter light is well worth the extra load of 10 more watts total.
The bathroom light has two bulbs and a three-position switch -- off, one, two. We changed the one bulb to 5 watts. The other, I think, is 20 watts. So showering or toileting one can choose between low light and very bright light. And the resultant battery consumption difference.
The dozen or so overhead 10w halogens we use only for housekeeping or searching for that lost aspirin on the floor. They stay off otherwise. So we've kept them at full power.
We just added a new task light to our lifespace -- an Ott-Lite (OTL13TCG). Has a 13watt twin tube fluorescent bulb in a hinged cover, uses 110 volts. Turns on the light when you raise the cover. Lamp sits on sofa arm or dinette or front window shelf. Gives the most light of all we have. Working out great so far for when we are on shore power.
LEDs may eventually become inexpensive enough to warrant replacing the overhead bin lights, but does not seem likely. We are extremely unlikely to burn most of these xenons or halogens out as infrequently as we use them. The xenons are highly rated for hours lifetime. We could use less light in the overhead bins but the led prices aren't attracting us. Nowhere else would we see anywhere worth reducing our light levels.
