Here and
here are a few examples of a multi-led 12V bayonet base bulbs.
just like lighthound pointed out.
i got these
http://www.kaidomain.com/WEBUI/ProductDetail.aspx?TranID=3286
and these
http://www.dealextreme.com/details.dx/sku.5055
for my dads MoHo.
Replace the 1196 type bulb. The one with pirannah (square) type leds looks pretty darn good, cause those types of leds can handle heat removal better, more metal through the epoxy spreads the heat out.
http://www.kaidomain.com/WEBUI/ProductDetail.aspx?TranID=3286
this one, its long , and i THINK it will be small enough to fit still.
i will get a Report back from him.
on his MoHo there is 2 bulbs to each fixture, one goes on or both, so potentially he can keep the incan for "high" if the led is to low :-(
he was using 5LED crappy ones for low, barely enough for nightlight, i am hoping these will compare favorable (albiet blue) with the incan.
the WALLS of 5mm leds like
http://www.kaidomain.com/WEBUI/ProductDetail.aspx?TranID=2082 , which have 1196 adapters, could DIRECT light in the MoHo fixtures , out where the light is more usable, Use the same Square Phiranah type leds, that will direct heat out well. probably best choice of all, but requires person to do more than shove bulb in hole. the round ones will waste light going into poor reflections (white plastic).
Poor refelections, if it was MY MoHo , i would have put aluminum tape (reflective and heat insulating) above the incan bulbs right from the start, stop the plastic from degrading, and pump more light back to the face of the fixture.
i used 2 of the Walls of 5mm lights in RED in my motorcycle, and finally got More output than the original 2X 2097 bulb in there. i also run all drop-in led replacements in my car, and they are not AS bright as the incan. the walls should work best, if you have some minor connecting and mounting skills.
FITTING these huge contraptions through normal automobile backup light containers , doesnt work, hopefully they will have a life in the MoHos of the world
because they are designed for 14.4V type automotive, when runnning off of 12V and no Alternator or generator charge, they will go lower in output.
using a cree or lux would blow these things all away, and last much longer, i use Lux3s in my car dome contraption. but if its campers and MoHos i dont see them getting thousands of hours of use yearly, so i donno if the investment in much longer life leds would be worth it. specially when in 2 years something more better might occur.
