1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Is one tail light lens darker than the other?

Old Jun 27, 2016 | 12:10 AM
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Is one tail light lens darker than the other?

Has anyone noticed this?

My clear outer lenses fell off so I got another pair from a pick n' pull to experiment with making my own.
On both pairs the right sides are darker than the left. I'm being pedantic, but it's really noticeable without the outer lens.

Last edited by j_tso; Jun 27, 2016 at 12:23 AM.
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Old Jun 27, 2016 | 07:11 AM
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Mine are on all my FB's. Only really noticeable at night, but yeah.
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Old Jun 27, 2016 | 11:29 AM
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Grounding issues? Newer bulb on one side or the other??

Now I've gotta check mine tonight.
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Old Jun 27, 2016 | 12:09 PM
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The lenses fill with debris if they aren't sealed well. The exhaust also makes a lot of heat. The exhaust is on the right side... so maybe it's a combination of exhaust soot and heat-darkening?

Maybe not something that happens overnight, but 30 years of driving might show an effect.
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Old Jun 27, 2016 | 07:17 PM
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Yep, looks like it's dust, soot, and heat. I popped the lenses out of the housings and gave them a quick wash on both sides. I can't tell much difference with light behind them. However the right side has a duller shine, doesn't feel as slick as the left side.

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