I bought some LED lights from Radionics called Lumidrive Lumispots in warm white. They are bit difficult to fit, i.e. need to solder the wires and glue them on a heatsink, but the light from them is gorgeous. You need to buy both spots and a low volt controller/driver to power them.
I also bought some LED "bulbs" from a supplier called low_voltage_lighting on ebay. They are a bit less effective, but still pretty good output, and fitting them is as easy as a normal halogen bulb. I ordered some more from them today. These bulbs can be fitted in normal halogen downlighters and spots. I got 4 led variety before and now will try the 5 led ones to see how they compare to the Lumispots.
I have currently a 7 Ah leisure battery on my van and was able to use all the lights I have (3 lumidrives, two spots, a LED strip light) as normal for two stormy nights. I doubt I could've done that with halogens of same output. It would have been interesting to have a voltmeter with me to see how much drain they actually did and whether I still had any spare capacity left in the battery.
Last edited by samih; 10-08-2008 at 11:34.