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Old 07-11-2011, 12:29 PM   #1
DexteRS
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Default Need Guidance on Unique 05' Headlight Restoration

I've done all the searching I can. I read both the Peanut Headlight restoration(and even posted in it) as well as a stickied 04 Headlight restoration thread. My issue is different and I'm not sure where to go. I first posted this in the newb section since I am pretty new here, but this seems to be the place to get advice from a more experienced crowd on this type of issue.

All of these "headlight restoration kits" and DIY headlight "clearing" mods are very well written out and do a great job on the outside of the headlight lens for fog/chips/scratches etc. However, in these write-ups it says not to ever touch the inside of the lens. Well, the part of my lens that needs restoring is the inside of the lens. It has gained a discoloration from the previous owner's cheap "HID" kit put in the halogen housings. This is evident from the discoloration appearing on the inside of the lens as well as only where the light was the strongest.



Here's the plan. I want to "clear" my headlights anyway, so when I do this I would like to make these lenses appear like new. However because the inside of the headlight lens is said to be different than the outside, I'm not sure what product to be using to scrub/buff that stuff out(which i'm pretty sure is melted plastic and would take either rubbing compound and/or sanding). Should I just try plastX first and see what it does to it? Or does anyone have any input on what to do in such a scenario?

I can't really afford to buy whole new headlights, so if I risk ruining the headlights so much that they wouldn't emit light properly or safely, then this project isn't worth it to me. However, it would be nice to have clean and clear lenses again.
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Old 07-11-2011, 02:18 PM   #2
TurboTeggyBoy
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Just my .02. I would think that the part you need to not touch is the actual housing(chrome looking part). You should be fine with cleaning the inside of the lens. Try a rubbing/polishing compound on the lens and make sure to clean it well before reassembly. Clean with alcohol is what I would do. When I cleared my headlights I had one that had a cracked housing behind the fender that allowed dust and moisture to collect. I wiped it all up before I put them back in, looks good as new. GL
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Old 07-11-2011, 03:10 PM   #3
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Quote:
Originally Posted by TurboTeggyBoy View Post
Just my .02. I would think that the part you need to not touch is the actual housing(chrome looking part). You should be fine with cleaning the inside of the lens.
No. You are not supposed to touch the inside of the clear plastic housing.

However, in this case, I think it is justified. Just make sure you clean it extremely well after you use whatever compound you decide to use on it.
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Old 07-11-2011, 03:18 PM   #4
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Quote:
Originally Posted by Ryguy32789 View Post
No. You are not supposed to touch the inside of the clear plastic housing.

However, in this case, I think it is justified. Just make sure you clean it extremely well after you use whatever compound you decide to use on it.

Well, what is the best way to clean it after using a compound of some sort. If I use PlastX or something, there is going to be product on the lens that needs to stay there, so is something like alcohol best? or what about even a rain-x anti-fog type stuff?
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Old 07-12-2011, 06:15 PM   #5
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Bump before I just go and wing it tomorrow. Was just looking for some sort of advice on how to mess with the inside of a lens without compromising it.
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Old 07-12-2011, 09:39 PM   #6
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2,000 grit wet/dry sandpaper (use it wet) then some polishing compound. that damage is from heat, im not 100% sure its going to be fixable.
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Old 07-12-2011, 09:51 PM   #7
The Duke
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That looks liek condensation from a bad seal.
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Old 07-12-2011, 11:06 PM   #8
DexteRS
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It's just the plastic ruined from the light. It was raining for those pictures so some drops on the headlight distorts some parts. At least I'm pretty confident it's from the cheap HID's. I don't see why it would take the shape of the most concentrated light if it wasn't a result of the light itself. Also, it stays there no matter the conditions outside whether it be freezing, raining, dry, etc. Anyway, really appreciate the help. I guess I will see for sure when I take it apart tomorrow.
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Old 03-14-2012, 07:39 PM   #9
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Did you ever do this? My headlight is having the same problem.. I have the stock HID's though
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Old 10-25-2012, 03:53 PM   #10
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Same here... any update?
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Old 10-25-2012, 04:50 PM   #11
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I hate to say this BUT for the cost, I would suggest buying new lenses from Subaru!

Once you mess with the inside of the lens, regardless of how awesome you are, you will always have issues with the lens.

Last time I checked, Subaru offers lenses for ~$100 per lens.

Just my .02
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Old 10-26-2012, 12:59 AM   #12
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I used the 3m headlight restoring kit on both the outside and inside of my lenses and it worked great! I didn't sand the insides, only used the polish and pad on that. But on the outside I used all the grits of restorer and it still looks great! I hit them with the buffer everytime I polish my paint and they are still looking new
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