C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

dash is still dim?

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Old Jul 27, 2022 | 12:20 AM
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Default cluster is still dim?

hey everyone, i recently changed out the photocell in my 85 corvettes cluster because it was dim to the point where i couldn't read it at night. it worked perfectly fine during the day. after replacing the photocell it got a little better but its still very dim at night for some reason anybody know why?

Last edited by steveo’s 85vette; Jul 27, 2022 at 04:05 AM.
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Old Jul 27, 2022 | 06:29 AM
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It might be a very stupid question but here we go, is the dash backlight turned up of headlight switch and are all the bulbs working.
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Old Jul 27, 2022 | 07:27 AM
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Originally Posted by s carter
It might be a very stupid question but here we go, is the dash backlight turned up of headlight switch and are all the bulbs working.
i replaced all the bulbs with brand new xenon bulbs and the headlight switch is turned fully to the right
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Old Jul 27, 2022 | 09:49 AM
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s carter may be mentioning the little lever circled in red. But I’m sure you know this already.


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Old Jul 27, 2022 | 11:09 AM
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The 85 doesn’t have that
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Old Jul 27, 2022 | 11:19 AM
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Originally Posted by steveo’s 85vette
i replaced all the bulbs with brand new xenon bulbs and the headlight switch is turned fully to the right
When you turn it left does it dim? Reason I ask is that went out on my car recently and I'm experiencing the same thing you are with the digi dash. Ironically enough, not long after I rebuilt the dash too. I should have swapped it when I had the dash skeleton out replacing it. It looked old but was functioning well so left it as is. I have the part but haven't gotten around to putting it in.
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Old Jul 27, 2022 | 03:50 PM
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Originally Posted by 85WHITEZ51
When you turn it left does it dim? Reason I ask is that went out on my car recently and I'm experiencing the same thing you are with the digi dash. Ironically enough, not long after I rebuilt the dash too. I should have swapped it when I had the dash skeleton out replacing it. It looked old but was functioning well so left it as is. I have the part but haven't gotten around to putting it in.
hey just tested it in my garage with the lights off and nope it doesnt
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Old Jul 27, 2022 | 10:57 PM
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Batee.com helped me.
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Old Jul 28, 2022 | 01:03 PM
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Originally Posted by steveo’s 85vette
hey just tested it in my garage with the lights off and nope it doesnt
If the brightness of the dash (not just the digi dash but all dash lights) doesn't change when spinning the headlight switch left and right then my bet is that your headlight switch has gone bad.
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Old Aug 2, 2022 | 06:03 AM
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You can check function of the dimmer photocell by shining a flashlight into it. You should be able to see the dash go dimmer.
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