A while back I bought projector headlights, but didn't change the bulbs. I went today and stupidly bought replacement bulbs made for the car and not for the headlights. Now I am confused. I know that I can use the original signal bulbs and I know I need H1 bulbs for the low beam, but I don't what to use for the hi beam. When I took off the headlight the bulb currently installed as the hi beam looks like a different size than the low beam. Anyone know??