i tried the 24v automotive base led cluster lights from an led company from st louis. I was very disappointed. wasn't long before many of the elements went poof. don't know what it was, but i suspect the 29-30V high side on the battery under charge, or transient voltage spikes from switching on off. they had a warranty, sure, but i did not bother, just throw-ed them in the trash. I have had better luck with the compact fluorescent lamps, only problem, dont drop them or screw them in to hard while holding the lamps. they will break off in your hand, bummer another $10 light bulb in the trash.