I just bought some Piaa H4 bulbs for my crystal clears, i origanily left the stock 9004 harness on with Silverstars. The only thing is that brightness and beam pattern is really bad when driving on non-street light lit roads. I have to drive with the high beams on just to see 15 ft infront of the car.
Anyways, need help wiring the H4 harness that came with the crystals to the stock 9004 harness. The wires on the stock harness are black, red w/ black or gray stripe (cant remember), and a red w/ yellow stripe. The H4 have a black, blue, and white wire.
I know black is ground, but i need to know which ones are hight and low beam!
also the stock wires are about a 20 gauge wire and the H4 wires are 8 or 10 gauge. Is this a problem? and how far back will i have to cut the stock socket? Close to the head or near the end of the harness?
BTW, I did search but couldnt come up with anything.
Thanks for any help guys!
Last edited by DisBeBrand0n : Aug 20th, 2003 at 06:09 PM.
the white is bright, blue is low, black is ground. i want to say red with yellow is bright, red with black is low, and black is ground. you will have to test..
ok, this is my assumption, but I'm sure the beam pattern had to be horrible. H4 housings are meant for H4 bulbs, 9004 Housings are meant for 9004 bulbs. If you switch it around you're going to get terrible light output. On another note, H4 filaments are perpendicular to the base while 9004 ones are parallel. You need to convert the bulb and harness when you convert the housting.
The H4 bulbs are so much better then the 9004, with the 9004 i could only see about 10ft infront of the car due to the angled down design of the crystal clear's housing. now i can see about 25ft out now!! I can actually see better with my new setup then i could with the stock housings and 9004s. over all i say it was worth it!!
oh, and btw i have PIAA Super White Plasma H4s. they are pretty white but not as white as i would like them, I was hoping that they would have a slight blue tint to match my POLARG B1 Hybrid Visuals..
i myself have the sylvania blue halogen bulbs, although when it isnt completely dark, they still appear yellowish in color. if only there was some way to assemble a bunch of those hyperwhite LED bulbs so that it could be a bright white output from the headlight. i guess retrofitting HID would be cheaper though
yea.. considering a single white LED is 4 bucks... imagine like.. 100 of them in each lamp.. although bright as hell, it would be like 800 bucks for the full conversion.. lol
BTW, I dont have any idea why you had 9004 bulbs in the H4 housings in the first place, if you do a housing conversion, you need to go the whole 9 yards and finish the job at the same time.
I didnt think H4 was a different brightness, are they HID? or just a step up from the old bulb (i have silverstars). I thought HID lighting was like a grand or two, to have put in.
Oh and are the LED corner light replacements worth it, Like the ones at autozone ($15)?
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Originally posted by SilverSentra99 I didnt think H4 was a different brightness, are they HID? or just a step up from the old bulb (i have silverstars). I thought HID lighting was like a grand or two, to have put in.
Oh and are the LED corner light replacements worth it, Like the ones at autozone ($15)?
H4s are supposedly a little brighter, but it may just b the brand you choose. HID is usually around $300-500 for an aftermarket kit (illegal in all states), and $300-800 if you do a retrofit (legal).
as for LEDs, I think they were talking about replacing the headlamp with LEDs which is nuts. LED corners on the other hand aren't worth it IMO. I had LED corners at one time, they cost $15-20 each, they burnt out in a few weeks, and durring that time, I got a warning from a cop that if he sees me with those (BLUE) lights again, I'll get a ticket. if you want a good hiperwhite 1157 bulb, go with B1 Hybrids.
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