Here are some pix of the H4 lowbeam bulb and harness. I never used mine since I went HID. But you can see it's easy to make them work if you just use some good 16 gauge wire and insulate female spades.





Sorry for the poor image quality but at least it's better then nothing. The center prong on the H4 is ground and the other two are positives depending which filiment you want to turn on.