Okay I got a question- I have the regular 4556 lights on my car and I noticed when I turn the high beams on the low beams go dimmer. Is that supposed to happen? Or does this mean my socket is H4 style?
It means you have the
Good sealed beam bulbs. Standard 4656 outside bulbs are (High/Low) 35w/35w, the better bulbs are 40w/55w. The 4651 inside high beams are 50w. You can swap in 4666 designed for 2 headlight systems that are 65w/55w, but they have one angled pin on the connector, and I'm not sure if the pins are re-arranged or not. You would need to modify something.
Yes, the high beams are 50w instead of 65w, but because they are not designed for high/low they waste less light so should have the same apparent brightness. The outside high beam provides more of a middle focus on high, while the inside high beam is focused further away.
Hella and Cibie make an inside high beam housing that uses H1 bulb, which is 55w@12v under European law, or
[email protected] under US law, but is exactly the same bulb; there are just different ways to measure it. It's a better high beam then using H4/HB2/9003 in the inner pair for the same focus issues.
I always avoid the blue-tinted bulbs. Only a very slight coating is legal, and in any case it's filtering out light, which I don't want. The U.S. only allows white, however most of the rest of the world allows selective-yellow as well.