so im stuck with hooking up my headlights cause on the jdm headlights theres only one bulb an h4 bulb i think it is. on the usdm set up there is a high beam bulb and a low beam. im curious to see how you guys converted it to the h4 set up??

 

What do you mean? You get a pigtail, splice the wires, and plug it in. High to High - Low to Low; It's really that simple.

Since I am sure you will ask: The H4 bulb only needs one of the grounds obviously (and they all go to the same spot anyways, grounding to the fender apron bulkhead).

 

cause the stock harness is set up for a 9006 bulb but you cant run the 9006 in the h4 headlight housing

 

Alot of people mistakenly just splice wires together.
THIS would be incorrect.

JDM bulbs uses a single, dual filament in a single bulb. How it works is that when low beam is on. You turn on the high beams and as u turn it on. low beams cut off.

Our USDM models have two single filament bulbs. When low beams are on, u can turn on high beams while low beams are still on.

I have just spliced high, low and ground wire together directly. yes it works but this way puts the H4h bulb in a dangerously hot situation. If you hardly use the high beams then you wont notice this problem. But once you do then its lights out for you and you cant see squat.

/discuss.

Anyways, i made a harness to connect my 9006 -> H4. in between it i added a relay so that it would work like a H4. (turn off low beam when high beams are used)

 

You will need to wire in a relay. I did mine this way.
On 92-00 civics From factory when low beams are on, and you flash your high beams the lows turn off

Like stated earlier, they will run hotter than normal when you turn on your highs as both filaments are going at the same time


I make these n sell them as well

 

I bought a harness from this guy, beast quality

 

how much are your harnesses? can you post a pic of it?

 

Honest & good guy his site is here with plenty of pics

 

$35 shipped, no pics at the moment

 

i sent you a pm

 

Neversatisfied got pwnd lol

 

Not exactly. I always convert mine this way on my GM vehicels and NEVER have a problem. I fully understand how both electrical systems work. I see you come out of the wood-works to talk trash? Interesting... If a relay is wanted to filter the low side off on the system then so be it; The bulbs life may be reduced by not doing it but it can be done as was already stated.

Reading "PWNS" you.

 

Easy old feller. These kids figured it out. I'm just here bored and pokin fun at you guys

 

Damn kids getting my blood pressure up!!! Oh well, just keep paying that Social Security and Medicare/Medicade on your paychecks!!!

PS - I know all about being bored... That's why I spend my time on Forums when I am not at home.

 

I'm bored as hell. I pay 14% into my 401k in fear of a loss of SS. Wtf the worlds coming to an end anyhow.

 

its actually h4h. h4 wont fit.

 

H4 bulbs will work, with modification. The actual bulb is the same the base of both bulbs is different. H4h has a smaller base while h4 (or 9003) bulbs have a bigger base.

But all in all, the electrical connectors are the same

 

the prongs on the two bulbs are different

 

same prongs and my bad it is a h4h

 

h4 bulbs will not fit in h4h without modification. the prongs are closer to the bottom on the h4h

 

hi