I have a MCI bus conversion and when the 1967 bus was built it had 24 volt system. Regular incandescent bulbs work but burn out prematurely. The voltage would be way too high for LED's. How might this be done to convert exterior lights to LED.
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24 volt conversion to LED on bus conversion
Posted 23 March 2013 - 03:05 PM
You could wire 2 in series or use a resistor. I think I have seen 24 volt leds at the consumer electronics show in Vegas.
Posted 01 April 2013 - 03:32 PM
Most of the "cheaper" LED bulbs operate on 12 volts. These bulbs use resistors or have the LED diodes in series to match a 12v supply. More expensive (only slightly) LED bulbs use a regulator circuit to feed the LED diodes from a nominal 12 volt source. These bulbs are theoretically more robust as they can handle the 14 plus volts from the RV charging circuit that shorten the life of a bulb designed for 12.0 volts. Many of these bulbs are rated for 10 - 30 volts so you would have no issues using them in a 24 volt coach. I suspect that not all bulb "form factors" are available due to the incorporation/space requirements of the regulation circuit but with a little shopping around you should be able to determine if they can be purchased in the sizes you need. I would suggest you use e-bay and find a dealer in China where they are actually manufactured. They have a much better selection than the N.A. dealers and I suspect any you would buy are made in that neck of the woods anyways. You will need to decide if you want warm (2800 deg K +/-) or cool white (4000 deg K +/-) so you know the approximate color temperature you want. I ordered bulbs for my coach from a Chinese dealer and had them in about 18 days in Canada. Most dealers will show estimated delivery times. I have been very satisfied with mine and $12 bulbs at the Tampa RV show cost me $3 for China about a year ago. Good luck,
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