Disclaimer #1: I am not a professional electrician and by no means an expert of any kind, I am just a guy that tinkers in his garage much like many of the people on this forum. The positive results that I have gotten with these indicators are a direct consequence of trial and error, mostly error. And so I have found a way to make this work and to make it look nice, but I can not guarantee that everything I did was by the book...because I never read it. that being said if you see something that you know is fubar I strongly encourage you to let me know so that I can fix that part of the thread.
Disclamer #2: Not everybody has a round headlight bucket into which they can mount LEDS, but never fear, because the idea behind this build is universal. Once you go to radioshack and look in " the drawer " for the first time you will see that there are a million ways to do this and options for all componets are boundless. So do not feel like this thread is not for you.
Disclaimer #3: This project is shockingly cheap, shortly I will post a quick shopping list that is unlikely to break thirty bucks and will definitely leave you with extra parts. That being said I am boldly making the assumtion that if you are taking on a task like this then you already have soldering iron technology in your garage. if not, never fear, it will be a little more costly for you on account of purchasing an iron and some rosin core, but you will be glad you did! It is just hot glue for big kids and it is cheap to start doing. Ill post some links for that as well.