I'm in my third year of replacing the stock bulbs in my motorhome with LED's. There have been some fairly cool recent improvements in LED's, I have some 1000 lumen emitters, and they are fairly close to the same light output.
The typical RV bulb is about 2o watts, a reasonable 240 lumen repalcement is just 3 watts for about the same amount of light, but in a nicer color (6000K - daylight). I have used 1 Watt - 5 watt emmitters and they work well. We can now go almost indefinatley with solar panels and leds, plus there is enough light to actually read by. The replacement emmitter and driver is in the $5.00 range and takes about 15 minutes to convert.
Although I don't want to start a debate on the practicality of doing this, if anybody is tired of running their batteries down due to energy hungry lights I can recommend some nice LED replacements - and some tips on modifing your RV lights. The 1 watt ones are really good in areas where kids never turn the light off. If you need any tips - let me know.
(I'm pretty solid with electronics if you have any questions).
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