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<blockquote data-quote="martiandancer31" data-source="post: 7582703" data-attributes="member: 616516">you could eliminate the resistors by using 12V LED&#039;s, the only problem is they&#039;re expensive and I can&#039;t even get data sheets for them. The normal blue LED&#039;s that I used have a wavelength of 470 nm and a brightness of 8000 mcd which is exactly the kind of specs I was looking for. Plus they cost I think $.22 a piece. Not too shabby.also, figuring out which side of the incandescent bulbs is +/- is a huge pain, because incandescent bulbs have no polarity so it&#039;s not usually silkscreened on the pcb. Basically i just did some poke and hope with a multimeter to try and figure out which side was ground based on a trace that I knew was ground and marked everything off from there. Worst thing that can happen tho is you get the polarity wrong on the first try, they don&#039;t work, you take them out and flip them around. No big deal. Or you break the controls like you say, lol. I&#039;ve been lucky thus far and not broken anything.</blockquote>

[QUOTE="martiandancer31, post: 7582703, member: 616516"] you could eliminate the resistors by using 12V LED's, the only problem is they're expensive and I can't even get data sheets for them. The normal blue LED's that I used have a wavelength of 470 nm and a brightness of 8000 mcd which is exactly the kind of specs I was looking for. Plus they cost I think $.22 a piece. Not too shabby. also, figuring out which side of the incandescent bulbs is +/- is a huge pain, because incandescent bulbs have no polarity so it's not usually silkscreened on the pcb. Basically i just did some poke and hope with a multimeter to try and figure out which side was ground based on a trace that I knew was ground and marked everything off from there. Worst thing that can happen tho is you get the polarity wrong on the first try, they don't work, you take them out and flip them around. No big deal. Or you break the controls like you say, lol. I've been lucky thus far and not broken anything. [/QUOTE]

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