Well i guess I'll start by saying that this is my first able, so be gentle (; lol. I always seemed to have a problem with my halogen security lights burning out. I wanted a simple, cheap, permanent solution. Led's seemed to be the way to go. Im fairly new to 120V electronics and am learning quickly, but I've been customizing 12V for years.

Step 1: The Problem

The first picture shows what has been happening to my halogens. Not just one or two but all seven. Not once or twice a year, but every few weeks. At about $6usd it can become an unnecessary headache. The second picture shows my personal choice for a solution. A 10w led:) The original halogen could produce over 3000 lumens, and this led produces around 950 so it's not quite equivalent. Having said that I chose the 10w led for several reasons. Mainly cost, and no heatsink fan needed at 10w. any higher and you would probably need a fan, which i couldn't get to fit tidily into the housing. 10w produces more than enough power for my application anyhow. The pictures are vague for lower light output, but i can see clearly in front of these lights for over 20 yards, or read a book easily at about 20 feet.
That's a great idea. I've thought about that but i couldn't do that with heatsinks i had. If i ever have problems with the leds burning out i will definitely put that idea to use with some new heatsinks. I wonder if using the aluminum housing as a heatsink, if i could get away with a more powerful led without using a fan. Since it would constantly have fresh air moving around it, it might work. Any insight?
<p>As bhvm says, if the heatsink is isolated from fresh air, it will not do its job properly.</p><p>But if you can solidly fix and screw the heatsink to the casing, it will act as a heatsink for the heatsink, so there would be no problem from it being sealed inside.</p>
I actually wrote it because i wanted the simplest upgrade i could that produced the most bang for my buck as it were. And the housings are sealed, but the first one i built as a tester was almost 6 months ago, and i haven't had any issues with them as of yet. That was definitely one of my concerns, but no problems so far:)
<p>Love your simple mod man! I hope that the fixture is not air tight otherwisey the heat will accumulate and cook the LED.</p>

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