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Old 02-21-2006, 08:34 AM   #1
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Projector Retrofit Write-Up (Valeo H7) 5G Prelude

5th Gen Prelude Headlamp Retrofit using 2.5" Valeo (Audi A4) H7 or D2S projectors (Retrofit Done by JLUDE originally posted on PreludePower.com):

Step 1: Removing the headlights
  • Remove the honeycomb grill (2 bolts and a couple plastic clips)
  • Remove the signals and sidemarkers
  • raise the front of the car enough to get under it and take the 6 bolts out that hold the bumper cover from underneath (all bolts are 10mm, use a socket ratcheting wrench)
  • Remove the two phillips-head bolts (8mm) that hold the bumper cover to the wheel well (you may have to pull the black plastic wheel well cover up some to get to this screw)
  • Use two people and slowly work the bumper cover off…there are 2 clips above the side markers that must pop straight out to come off and then it clips under the headlights, pull forward after you get the side clips free and off it comes! Now store it somewhere safe inside!
  • Unbolt the headlights! There are 3 stainless bolts:
1

2

3

7. Unplug the headlight harnesses and Remove the headlights

  • Take your bulbs out FIRST! Use the oven method to remove the headlight lenses: Preheat oven to 200 degrees, then turn it off, put a cotton towel in the oven and set the headlights (one at a time) on the towel..close oven, leave them in 7-9 minutes…remove them and then using a flat head screwdriver, pop the clips loose as you pry the lense away from the black housing and the sealant should stretch…cut the sealant emediately with a sharp knife as it comes apart
  • tada!
  • Loosen (counter clockwise) the adjustment screws in the headlight alternately until the little ball joint has tension on it…then use a large flat head screwdriver to pry the ball joint out of it’s socket.
Step B. Mounting the projectors (retrofitting)
  • Remove the bulb holder wire and screw and remove the single screw that holds the H1 low beam bulb shield and remove the bulb shields.
  • Use a dremel tool with cutting disk to cut the hole out for the projector: The best idea here is to work slow, cut a small amount first and then start fitting the projector bowl in from the front side and enlarge the hole as needed to center the projector and allow it to seat all the way to the bolt holes on the lense holder. There is not a lot to show here except that you should use the lines on the projector to keep the hole centered and so that both right and left projectors mount in the same position on the reflector… some pics:



I made the mistake of mask taping the reflector…no scratches but a couple flakes of chrome came off when I removed this tape on the reflectors! Best would be to use plastic cling wrap and tape it with electrical tape on the back side of the reflectors only!

cut the hole! Take your time and test fit the projector often!









I then used a dremel steel cutting bit to trim the edges of the hole I had cut to smooth them out and hold the projector bowl flush



Once the hole was trimmed out enough I centered the projector as best I could and while sitting the flat base of the reflector on a level surface put a small level through the opening in the side of the projector and make sure it sits level, this will mean that the cutoff shield is basically level.





Once you have it in position mark and drill the 4 holes for the machine bolts that will hold the projector to the reflector. This takes some trail and error. I started each hole, then put the projector back in and looked through the bolt hole to see if it was lined up, if it was off slightly I adjusted the hole and then drilled it through the reflector (these holes will need to be slightly larger later). I used the small holes at the top side of the Valeos (as seen in the pics with smaller bolts since these holes are a smaller diameter).



Once you are satisfied with the bolt holes, take the projectors back out of the reflectors and finish your shroud and bezel…I used polished aluminum sheeting for my shroud, made a template from construction paper and then cut the aluminum, trimmed it to fit perfect:
Before I put the shroud on the projector I covered the two openings on the sides of the Valeo lense holder with pieces of aluminum and JB welded them on to block the light leakage, then roughened them so that they would adhere well to the shroud.




I JB welded the shroud into the properly sized “cone”



Then used high temp silicone to attach the shroud to the projector



The chrome bezel is held on to the shroud using high temp silicone, trimmed excess from the seam and it’s on there solid as a rock.



Now, bolt the projector to the reflector…I’d recommend that you put some little springs between the reflector and the bolt holes on the lense holder to keep tension so they don’t shift or get loose







Set the flat bottom of the reflector on a flat surface and then look at the botton of the projector and make sure the projector is rotationally aligned and then use the lines on the bottom of the high beam reflector to make sure it sits straight and no pointing off right or left. Then sit the reflector on a flat surface and make sure it is pointing out flat and not pointed up or down. (right/left and up/down can be adjusted on the car but rotational alignment cannot so it must be perfect at this phase…for the best alignment you should test the projectors on the car for proper aiming before permanently bolting them to the reflectors:









Final mounting! Clean your projector lenses, reflector bowl, etc with a lint free cotton cloth and rubbing alcohol to remove all grease and residues:




To put the lenses back on:
I just reheated my seals (same way you did to take them apart) and clamped it back together till it cooled…We are almost done!





I’d recommend leaving the back of your headlights open a week to let the silicone gases escape) and then use the rubber seals, trimmed to fit over the D2S base as best as possible, if there are gaps seal them up with foam or cover with foil to keep bugs out.


The next pic shows the back of a retrofit properly trimmed around the bulb:




Now, put the lights back on the car, attach your wiring harnesses and ballasts, fire them up and adjust the aiming using the stock alignment wheels, put the bumper cover back on and reattach all your aux. lights and you are rolling with real headlights!


(retrofit on the right, S2000 on the left)




This isn’t perfect but it’s close to how your aiming should look on a wall at 25’ from the car when done using ECE cutoff shields.



Output on a dark backroad, retrofit only, no highbeams!
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Last edited by JLude; 05-30-2007 at 09:44 AM.
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Old 02-21-2006, 08:38 AM   #2
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Nicely done
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Old 02-21-2006, 08:53 AM   #3
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Nice...I defenitly like how you made your shroud
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Old 02-21-2006, 08:56 AM   #4
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nice write up! hope to do retro soon!
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Old 02-21-2006, 09:19 AM   #5
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someone needs to add this to the resourse thread it's got great info that the other one doesnt cover great write up i know now with yours jess and the other one that boosted hosted now anyone can do a retrofit properly

and ludefan is this the part that you place that patent piece on?


is that what you seal up to prevent moisure in? if so why cant you just use silicon?
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Old 02-21-2006, 09:28 AM   #6
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man this is one of the best write-ups ive seen... thanx for taking the time to do this.
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Old 02-21-2006, 09:37 AM   #7
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wow, good job on the write up and homemade shroud... i dont think im ever gonna do a retro-fit, atleast not in the near future, but wen i do, im def usin this as a guide.

ha! i dont kno how rep works on this forum but "You must spread some Reputation around before giving it to JLude again."
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Old 02-21-2006, 10:13 AM   #8
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one helluva writeup!
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Old 02-21-2006, 10:23 AM   #9
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Nice write-up.
congrats man, you did a really nice job.
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Old 02-21-2006, 11:11 AM   #10
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Wow, nice write-up. I knew it had to be coming sooner or later. Good job.
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Old 02-21-2006, 12:36 PM   #11
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Thanks for the comments guys. Hope this helps someone realize that retrofitting is really not all that complex if you have the time (and patience) and a little bit of artistic ability.
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Old 02-21-2006, 03:00 PM   #12
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Thats sooo hot.
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Old 02-21-2006, 06:28 PM   #13
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very nice write-up.

time to update your sig!
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Old 02-21-2006, 08:27 PM   #14
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mad props on your write up
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Old 02-21-2006, 08:37 PM   #15
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I said it before, but good job man. Although, it would have be really cool if you would have left the tape on the reflector. Yeah, that's what I'm doing on my next set.
Nate
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Old 02-21-2006, 10:05 PM   #16
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nice write up J. I'll add it to the resource thread.
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Old 02-21-2006, 10:15 PM   #17
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props!! making me jealous!!! over all how much did u spend?
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Old 02-22-2006, 11:18 AM   #18
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Quote:
Originally Posted by lenjaiah
props!! making me jealous!!! over all how much did u spend?
Overall with all the tools, adhesives, springs, bolts, etc etc. Around $575. But I bought brand new OEM BMW/Mercedes bulbs, ballasts and Audi projectors. The OEM ballasts have a life expectancy of 2,500 hours which is about 100,000 miles of driving with the HID's on the entire time.
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Old 02-22-2006, 11:23 AM   #19
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great writeup man! I'll be pm'ing you when I get started on mine for help..
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Old 02-23-2006, 06:56 AM   #20
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A couple front shots of the finished project:















Yes my damn driveway is gravel, I ride it in first at idle rpms (7mph).
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Old 02-23-2006, 07:00 AM   #21
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dude i have to travel 5 miles of gravel you dont know pain
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Old 02-23-2006, 07:27 AM   #22
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Quote:
Originally Posted by jesseunvoas
dude i have to travel 5 miles of gravel you dont know pain
I feel for ya man. Mine is only 1/3 mile long and it takes me almost 5 minutes to get down without kicking up rocks or dust! It would take me 75 min to go 5 miles on gravel at my rate!!!
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Old 02-23-2006, 09:57 AM   #23
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Very Very good job man! I appreciate how detailed the WU is !! When (not if) I do the Conv. I will use this one for sure!!!
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Old 02-23-2006, 11:06 AM   #24
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Thumbs up

Great job. Rep point 4 u.

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Old 04-03-2006, 01:36 PM   #25
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parts?

hey i was just wondering where you got the profjectors from? i know you can use bmw or audi's and they will work nicely but did you buy a set of there headlights and take them apart to make yours? or is there somewhere where you can just buy the projectors?

thanks
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