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  #1  
Old 06-06-2010, 08:33 PM
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Question Junkyard Headlights. To buy, or not to buy?

When I was at the junkyard the other day I saw a set of Euro headlamps in wonderful condition. Unfortunately.. They were filled with some rusty water. Now I have read about sanding and placing tape on the reflectors.

My question is do you think this would be a cost effective way to get a nice set of Bosch headlamps? What other pieces would have to be replaced in the lamps?

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Old 06-06-2010, 08:51 PM
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The aftermarket euro's are $200 a set minimum. Reflector can be sprayed or taped off. If the glass and housings are in good shape buy them for sure.
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Old 06-06-2010, 09:02 PM
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Excellent. These can probably had from the pick and pull yard for under $50! (My front mud flaps cost around $20)
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Old 06-06-2010, 11:50 PM
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explain "Reflector can be sprayed or taped off" for me please..i'm interested...
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Old 06-07-2010, 12:05 AM
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Thumbs up

I think he is referring to this method of restoring the headlamps:

107 Euro Headlight Reflectors Refinished Very Well - WITH TAPE!!! (long)

Which is actually exactly what I plan to do!
I read that you cannot paint the reflectors, you have to use aluminum tape. NOT shiny gaffer tape or chrome tape.
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Old 06-07-2010, 12:18 PM
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The lights will never put out the correct amount nor pattern of light, so what's the point in changing from US lights?

However, if the lenses are perfect, they're worth the $50. So are the wiper motors and lower filler panels if it has wipers.
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Old 06-07-2010, 02:24 PM
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the Lens is the determining factor in pattern.
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Old 06-07-2010, 03:43 PM
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Not if the reflectors aren't sending the light to the correct area of the lense. The lense only changes the angle of the light hitting it, if the light is coming from a different direction (different point on the reflector), it will leave at a different (wrong) angle.

Reflectors, bulbs, and lenses are designed together. This is the problem with changing the light-source in a light assembly (EX: going from a filament bulb to an HID), it changes how the light is distributed on the reflector, the lense, and thus outside of the light.

Have you noticed that many headlamps have no optics in the lenses? Clear shield only? How the reflector have no influence on the light? The reflector is the most important part of headlamps.
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Old 06-07-2010, 08:18 PM
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Quote:
Originally Posted by babymog View Post
Not if the reflectors aren't sending the light to the correct area of the lense. The lense only changes the angle of the light hitting it, if the light is coming from a different direction (different point on the reflector), it will leave at a different (wrong) angle.

Reflectors, bulbs, and lenses are designed together. This is the problem with changing the light-source in a light assembly (EX: going from a filament bulb to an HID), it changes how the light is distributed on the reflector, the lense, and thus outside of the light.

Have you noticed that many headlamps have no optics in the lenses? Clear shield only? How the reflector have no influence on the light? The reflector is the most important part of headlamps.
Clear lenses with no cutting for pattern because the pattern is made from the reflector. our lenses make the pattern beyond the reflector. Hold a flashlight behind the lens and you'll get the same pattern.
Yes the percentage of light put out by a repaired reflector is going to be reduced, but not by any significant amount, and that can be compensated in choice of bulb.
This repair idea is purely to rid the assembled headlamp of the ugly brown hue that it gets when the reflectors are corroded.
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Old 06-07-2010, 09:29 PM
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Read the first paragraph of post 8 again, ...

It depends I guess on whether you want the Euro lights for the superior optics and light output, or for looks. If it is for the latter, go for it, paint them or whatever, ... you'll end up with light output in the range of the dismal US lights you're replacing.

A couple of hours designing automotive lights with ray-tracing software and you'll "see the light".

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