i have LED's and neons all thru my car. if you put a single resistor in front of the LED's if they are in a series you are fine. as for one of them going out...i would put money on it you just haven't connected it well because theres no reason for only that one to go out. for the guy at the top about the neons....good luck with 18's in the car....i have 10's under the dash on both sides and they work great. you could probly fit a bigger one under the passanger but why spend that much more money when it won't look any better. the driver side is a tight fit. and for under the front seats. the 10's BARELY fit. i have them angled. you have to be careful of the seat motor on the driver side too. i should miss by less than a quarter inch.
*check out ebay* i just ordered a 100 LED's with resistors for 18 bucks...never find a better deal than that
http://www.cardomain.com/ride/2031222
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