Got the LED off of Ebay. Their application is for marker light on cars. As long as it is a 12v with a wedge base, any should work. As for the headlight bulb, I got that off of Ebay two years ago. I couldn't tell ya the make for the life of me, because I can't even remember what I had for lunch today. Come to think of it, damn I forgot to even eat lunch. I believe it was called a "Super-white xenon" bulb. Only paid like $6.00 for it. Much brighter than the stock, and much whiter. Sorry I couldn't be of more help. Any H4 bulb should work fine. May want to check Autozone, Kragen, etc. I have seen them there before.