Dainel Stern Lighting You'll need to email him for ordering info. Read through his site... you can find some good info. I'm very happy with my Cibie H4's.
Quick note on the Daniel Stern products. I installed the full setup in my JK, including harness. His support was fabulous, and the light output was better than I ever could have expected.
But I started running into problems pretty quickly, and I started blowing bulbs left and right. I spend a lot of time offroad and live on a dirt road. When I reached out to Daniel, he told me that while the product is designed to produce the most amount of light, the higher amperage makes them very brittle. After going through 6 bulbs over barely a year, I recently swapped out the bulbs for the new Lifetime LED bulb conversions. I still use my Cibie's and harness, and it works great, no problems.
If interested you can read more here:
http://www.x-plorenowxpeditions.com/2014/01/16/let-there-be-light-part-ii-even-more-light/.