Red light, Green light produced some interesting comments when it was published. So I won't be surprised if the sequel to that puzzle produces some interesting comments too... This is not the answer you are looking for.
LEDs are even more commonplace today than they were five years ago. They're even beginning to replace both the humble incandescent light bulb and its "replacement", compact fluorescents.
Without further ado, here's the puzzle you need to solve:
Decode the puzzle and use what you find to fill in the blanks in the coordinates shown below:
N _ _° _ _ . _ _ _ W _ _ _° _ _ . _ _ _
You're looking for an ammo can. There are finder's cards for the first ten finders. The cache hide is fairly winter-friendly; whether the trek to the cache is or not depends on the weather and how you're equipped. Regardless of which way you approach the cache, you will encounter off trail hiking conditions and some deadfall. Some approaches are much steeper than others. If the weather is even halfway clear, you will be rewarded with some magnificent mountain views at the end of your trek. Good luck!
Congratulations to BVPete for being the first to solve and the first to find!