DIY: modifying 9006 base to fit in H4H housing

VDM GS · 12-02-06, 07:20 AM

Upon installation of my 9006 hid kit into my 1-piece headlights, I decided to dremel the 9006 bulb base to fit into the H4H housing (rather than dremeling the H4H housing which takes 10 times longer). This mod is easy and just took a few minutes to do with a dremel, and is great for those who wish to install 9006 HID kits into their 1-piecers. THE RESULT IS A PERFECT FIT!

WARNING! Do this at your own risk! Keep in mind that you most likely will not be able to return the bulbs after tampering!

(For those who do not know, USDM headlamps use 9006 bulbs and JDM headlamps use H4H bulbs. The differences are that the USDMs have seperate high beams and low beams, where as the JDMs have H3 fog lights where the USDM high beams would be and they use JDM H4H bulbs which contain dual filaments for the purpose of low and high beams in one bulb. And by doing this mod you are replacing the H4H dual filament bulb with a 9006 bulb, losing the high beams, no big deal bcuz 9006 HIDs are bright enough in my opinion)

The 9006 base is the same circular size as the H4H base, but the difference on the 9006 bulb base is that two out of three of the 'legs' are not in the exact positions as the H4H bulb base, plus there is not an 'indent' on that one side needed for fitment.

So we must dremel the two 'legs' that do not fit, trimming it and leaving just a tip of the 'legs' left so that the bulb doesnt fall thru; plus we need to carve an indent on the one side of the base where the H4H housing has a bump there requiring the indent (there is only one bump in the H4H housing even tho the H4H bulb has two indents, as shown in the pics below)

easy as 1-2-3...
1. Observe both 9006 and H4H bulbs and identify the differences, notice where to trim!
2. Wrap the bulb with plastic wrap and a rubber band, then use your dremel to trim away!
3. Clean up and go install your newly modified 9006 bulbs into your 1-piece H4H housings!
(If the bulb base still doesnt fit perfectly then identify the spot where you must trim some more)

Here are some sample images to make it clear and simple...

Pic of 9006 bulb AFTER DREMELING:
[notice the trimmed indent and how much of the 'legs' i left (just enough so the bulb doesnt fall thru and that it clears the walls for fitment)]

Pic of H4H JDM(/VDM) 1-piece housing

Pic of a perfect fit:

Dremel tool i used:

(the gas pocket in the 9006 hid bulb lines up with the filament in the H4H bulb, so the beam pattern was about exactly the same before and after)

enjoy ur lights and GOOD LUCK!

JTYanksFan · 12-02-06, 07:25 AM

Nice job! I really need to have this done! I sent you a PM!

MoisTiCaL · 12-02-06, 07:41 AM

Just one question.... Can you really see they road with those 1200K HIDs? looking at your sig that greenish blueish light looks like it doesn't give you any usable light, but the fogs is what is actually lighting up the road for you??

SixSpeeder · 12-02-06, 04:14 PM

nice you got that off... looking good...

VDM GS · 12-03-06, 12:40 AM

Quote:

Originally Posted by MoisTiCaL

Just one question.... Can you really see they road with those 1200K HIDs? looking at your sig that greenish blueish light looks like it doesn't give you any usable light, but the fogs is what is actually lighting up the road for you??

i know its said that 12000ks are not as bright as 4000k-6000k, but its still way brighter than the standard stanley halogens that came with the 1-pieces (and those were pretty bright, but yellowish), the road is much more visible, especially reflective paint, signs, n road markers. By the way the pic used to be in my sig was with the LOWS OFF

VDM GS · 12-08-06, 02:13 AM

All updated w more pics!

Would a moderator please move this to the DIY section..thx

Shaar · 12-08-06, 10:41 AM

great diy! yea this should be moved to the diy section for sure! i may do this...

bl420 · 12-09-06, 12:03 AM

Quote:

Originally Posted by VDM G

i know its said that 12000ks are not as bright as 4000k-6000k, but its still way brighter than the standard stanley halogens that came with the 1-pieces (and those were pretty bright, but yellowish), the road is much more visible, especially reflective paint, signs, n road markers. By the way the pic used to be in my sig was with the LOWS OFF

while that maybe true...

its all about how your eyes respond the the color spectrum...

blue and violet are the hardest colors for they eyes to distinguish...

so in terms of luminosity... yeah it will be brighter...

will that brighter blueish purple 12000k light be any better...

my opinion is no... its just worse... a bright light you cant see...

lgnd · 12-09-06, 11:37 AM

EDM headlights has H4 bulbs not H4H.

VDM GS · 12-09-06, 12:54 PM

my mistake, i just assumed, thx i fixed it. so im guessing EDMs have seperate highs and lows and no fogs?

lgnd · 12-09-06, 01:01 PM

Quote:

Originally Posted by VDM G

my mistake, i just assumed, thx i fixed it. so im guessing EDMs have seperate highs and lows and no fogs?

Yes they have separate highs and lows and no fogs. EDM Legends with oem foglights are very rare. I know only 2 sedans and no coupes.

VDM GS · 12-10-06, 12:49 AM

ic so the edm headlamps are like the usdm headlamps.. interesting

lgnd · 12-14-06, 07:53 AM

Quote:

Originally Posted by VDM G

ic so the edm headlamps are like the usdm headlamps.. interesting

except edm is glass not plastic. And edm corners has no side marker light. Headlights and corner lights are separate.

VDM GS · 12-14-06, 04:53 PM

so they're one piecers too? wow i'd love to see pics of the edms.

bl420 · 12-14-06, 05:23 PM

no they're two piece...

search for mike diaz and his edms and you'll see

12-02-06, 07:20 AM	#1 (permalink)
VDM GS 94 6MT KA7_8 Join Date: Apr 2004 Location: OC, CA Posts: 221 iTrader: (2)	DIY: modifying 9006 base to fit in H4H housing Upon installation of my 9006 hid kit into my 1-piece headlights, I decided to dremel the 9006 bulb base to fit into the H4H housing (rather than dremeling the H4H housing which takes 10 times longer). This mod is easy and just took a few minutes to do with a dremel, and is great for those who wish to install 9006 HID kits into their 1-piecers. THE RESULT IS A PERFECT FIT! WARNING! Do this at your own risk! Keep in mind that you most likely will not be able to return the bulbs after tampering! (For those who do not know, USDM headlamps use 9006 bulbs and JDM headlamps use H4H bulbs. The differences are that the USDMs have seperate high beams and low beams, where as the JDMs have H3 fog lights where the USDM high beams would be and they use JDM H4H bulbs which contain dual filaments for the purpose of low and high beams in one bulb. And by doing this mod you are replacing the H4H dual filament bulb with a 9006 bulb, losing the high beams, no big deal bcuz 9006 HIDs are bright enough in my opinion) The 9006 base is the same circular size as the H4H base, but the difference on the 9006 bulb base is that two out of three of the 'legs' are not in the exact positions as the H4H bulb base, plus there is not an 'indent' on that one side needed for fitment. So we must dremel the two 'legs' that do not fit, trimming it and leaving just a tip of the 'legs' left so that the bulb doesnt fall thru; plus we need to carve an indent on the one side of the base where the H4H housing has a bump there requiring the indent (there is only one bump in the H4H housing even tho the H4H bulb has two indents, as shown in the pics below) easy as 1-2-3... 1. Observe both 9006 and H4H bulbs and identify the differences, notice where to trim! 2. Wrap the bulb with plastic wrap and a rubber band, then use your dremel to trim away! 3. Clean up and go install your newly modified 9006 bulbs into your 1-piece H4H housings! (If the bulb base still doesnt fit perfectly then identify the spot where you must trim some more) Here are some sample images to make it clear and simple... Pic of 9006 bulb AFTER DREMELING: [notice the trimmed indent and how much of the 'legs' i left (just enough so the bulb doesnt fall thru and that it clears the walls for fitment)] Pic of H4H JDM(/VDM) 1-piece housing Pic of a perfect fit: Dremel tool i used: (the gas pocket in the 9006 hid bulb lines up with the filament in the H4H bulb, so the beam pattern was about exactly the same before and after) enjoy ur lights and GOOD LUCK! __________________ DIYs: Bumper Lights MOD - Rebasing 9006s for JDMs - JDM 1-Piece Install BHG Survivor. Overheating? Combustion leak tester sold @ www.rxauto.com Last edited by VDM GS : 01-02-07 at 02:41 AM.

12-08-06, 02:13 AM	#6 (permalink)
VDM GS 94 6MT KA7_8 Join Date: Apr 2004 Location: OC, CA Posts: 221 iTrader: (2)	All updated w more pics! Would a moderator please move this to the DIY section..thx __________________ DIYs: Bumper Lights MOD - Rebasing 9006s for JDMs - JDM 1-Piece Install BHG Survivor. Overheating? Combustion leak tester sold @ www.rxauto.com

12-08-06, 10:41 AM	#7 (permalink)
Shaar Proud FORMER Legend Owner Join Date: Aug 2005 Location: Springfield, MO Posts: 3,585 Car 1: 97 Accord Wagon (SiR) Car 2: 92 Lexus SC400 iTrader: (18)	great diy! yea this should be moved to the diy section for sure! i may do this... __________________

12-09-06, 11:37 AM	#9 (permalink)
lgnd EDM KA8 owner Join Date: Aug 2005 Location: Budapest Hungary Posts: 699 Car 1: EDM KA8 '91 Car 2: EDM KA8 '91 RIP iTrader: (10)	EDM headlights has H4 bulbs not H4H. __________________ www.honda-legend.hu For Sale: Custom ADDCO rear sway bar shoulder bolts

12-09-06, 12:54 PM	#10 (permalink)
VDM GS 94 6MT KA7_8 Join Date: Apr 2004 Location: OC, CA Posts: 221 iTrader: (2)	my mistake, i just assumed, thx i fixed it. so im guessing EDMs have seperate highs and lows and no fogs? __________________ DIYs: Bumper Lights MOD - Rebasing 9006s for JDMs - JDM 1-Piece Install BHG Survivor. Overheating? Combustion leak tester sold @ www.rxauto.com

Remove Advertisements Sponsored Links
The Acura Legend & Acura RL Forum Advertisement

12-02-06, 07:25 AM	#2 (permalink)
JTYanksFan PO-PO, DA MAN, 5-O Join Date: Oct 2005 Location: New Jersey Posts: 1,161 Car 1: 2001 Lexus GS430 Car 2: 1999 Grand Cherokee Car 3: 95 Legend GS (SOLD) iTrader: (5)	Nice job! I really need to have this done! I sent you a PM!

12-02-06, 07:41 AM	#3 (permalink)
MoisTiCaL MasTa BaYTer Join Date: Dec 2005 Location: St. Petersburg Posts: 1,891 Car 1: 1994 Leg iTrader: (46)	Just one question.... Can you really see they road with those 1200K HIDs? looking at your sig that greenish blueish light looks like it doesn't give you any usable light, but the fogs is what is actually lighting up the road for you??

12-02-06, 04:14 PM	#4 (permalink)
SixSpeeder Real Name: Mike Diaz Join Date: Nov 2006 Location: Jerz Posts: 208 Car 1: 93 Ka7 L R.I.P. Car 2: 95 Ka8 Ls T2 6Speed Car 3: 04 R1 / 05 DRZ 400sm iTrader: (0)	nice you got that off... looking good...

12-10-06, 12:49 AM	#12 (permalink)
VDM GS 94 6MT KA7_8 Join Date: Apr 2004 Location: OC, CA Posts: 221 iTrader: (2)	ic so the edm headlamps are like the usdm headlamps.. interesting __________________ DIYs: Bumper Lights MOD - Rebasing 9006s for JDMs - JDM 1-Piece Install BHG Survivor. Overheating? Combustion leak tester sold @ www.rxauto.com

12-14-06, 04:53 PM	#14 (permalink)
VDM GS 94 6MT KA7_8 Join Date: Apr 2004 Location: OC, CA Posts: 221 iTrader: (2)	so they're one piecers too? wow i'd love to see pics of the edms. __________________ DIYs: Bumper Lights MOD - Rebasing 9006s for JDMs - JDM 1-Piece Install BHG Survivor. Overheating? Combustion leak tester sold @ www.rxauto.com

12-14-06, 05:23 PM	#15 (permalink)
bl420 Dont Catch Join Date: Sep 2004 Location: Bogata, Lima Posts: 4,810 Car 1: 1991 Sedan iTrader: (16)	no they're two piece... search for mike diaz and his edms and you'll see __________________ Anti Alpine Type-R Thread

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Show Printable Version Email this Page
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Hid Install In Jdm H4h Headlights	legend4life	Second Generation Legend (1991-1995)	2	10-17-05 09:31 AM
How to mod 9006 HID bulbs to fit in H4h opening in your JDMs	Octane	Second Generation Legend (1991-1995)	25	08-24-05 01:19 PM
Possible DIY: How to make your own projectors	D0NNY	First Generation Legend (1986-1990)	2