Author Topic: Headlight questions: H1/H4 (Read 3678 times)

P. Kennedy · « **on:** December 21, 2007, 01:15:11 PM »

I think I screwed up. I saw some cheap H4's on eBay (Autopal brand, plug & play) and ordered 2 sets (4 total.) So now I have (4) H4's rated 100/50w. I can't put 4 identical headlights in my iS can I? (rhetorical.) I need a couple of H1's I assume. Which are the low beam / high beam, H1 or H4? And what would be recommended wattages if I drive a fair amount of dark, snowy country back roads?

Thanks
Pat Kennedy

Wise Old Dog · « **Reply #1 on:** December 21, 2007, 01:38:30 PM »

H4 has both hi and low.

P. Kennedy · « **Reply #2 on:** December 21, 2007, 02:28:10 PM »

...does that mean I can, in fact use identical H4's for all four headlight positions?

Wise Old Dog · « **Reply #3 on:** December 21, 2007, 05:27:44 PM »

I guess you could, but the H4 high beam doesn't seem to crank out the light like the H1. Every setup I've heard of uses one of each. It might be cool to have 4 low beam lights.

gearheadE30 · « **Reply #4 on:** December 21, 2007, 10:09:41 PM »

You can, but you won't have the same light output and you will have four low beams. I'd pick up a set of H1's if you can find some.

P. Kennedy · « **Reply #5 on:** December 21, 2007, 10:18:21 PM »

I was leaning in that direction. One learns by one's mistakes.

AL GReeNeRy · « **Reply #6 on:** December 21, 2007, 11:51:26 PM »

check out the fog lights on an old benz. they got yellow h1 replacements that fit right in to our high beams. i have them set up and work GREAT in the fog out here in the bay. you juss gotta bump up the fuses to 10amp fuses and youll be good

tjts1 · « **Reply #7 on:** December 22, 2007, 12:02:48 AM »

Yes you can install the four H4s, no you won't miss the H1s. Did you get the fluted lens version or the multi surface reflectors? I started with the fluted lens and now i have the MSR on order.

rfritz · « **Reply #8 on:** December 22, 2007, 09:20:26 AM »

The lenses are different on the H1 lights, which will give a different beam pattern. The best setup is to do it the right way with H1/H4 setup. I have had this same light setup on all of my e30's and it is great. You can get higher wattage bulbs to get a brighter beam if you want.