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Where is map light for A/C Control?

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Old Aug 15, 2018 | 07:12 PM
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Default Where is map light for A/C Control?

I'm told that my 81 doesn't have back lite HVAC controls. I read that there is a little flashlight map light on the center gauge cluster above the gauges that shines down onto the control but I can't find it. Can someone send me a picture or educate me if I'm misinformed? I'm sure it's probably obvious but apparently I'm not that smart. Thanks!!
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Old Aug 15, 2018 | 07:27 PM
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This is it, it is located center top of the gauge panel and shines down on the ac control. It uses a special magnifying bulb,

https://willcoxcorvette.com/corvette...er-77-82-26902
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Old Aug 15, 2018 | 07:35 PM
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Thanks. I would have never found it. After laying on my back, I can see it. My light works, just not very bright!
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Old Aug 15, 2018 | 07:48 PM
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It probably has the wrong bulb in it, originally it had a bulb with thick glass that would magnify the light. Not sure if they are still available or not, hopefully some one will chime in with more info.
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Old Aug 15, 2018 | 08:17 PM
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The good bulb number is a GE 558. The bulb has a magnifier built onto the end of the glass. Not sure what manufacture but Willcox sells them.
https://willcoxcorvette.com/corvette...l-center-77-82
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Old Aug 16, 2018 | 01:26 AM
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I made the whole a little larger but it is still shows little light on the heat control. Actually it is useless. Will the correct bulb man a significant difference?
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Old Aug 16, 2018 | 08:01 AM
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Originally Posted by biackbenz
I made the whole a little larger but it is still shows little light on the heat control. Actually it is useless. Will the correct bulb man a significant difference?
If you're out in the country in the dark without a lot of indirect lighting coming in, then yes, you should notice a difference. If most of your driving is in city/town with a lot of streetlights around you then most likely not enough that you'll notice.
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Old Aug 16, 2018 | 12:40 PM
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IMO, that bulb is worthless even in the best of conditions. It was a bad design by GM and should have been a back-lit control panel. The 77-82 are the same lighting and they all are pathetic. Try a new bulb and roll with it.

Last edited by Buccaneer; Aug 16, 2018 at 12:41 PM.
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Old Aug 16, 2018 | 03:34 PM
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Yes, the proper bulb definitely helps. If you disassemble the lantern assembly you'll find a metal piece with a rectangular hole that acts as an aperture. I too enlarged it a bit and the lighting is better. At best it's certainly not nearly as effective as backlighting. It seems a strange design and I'm surprised it was ever used.
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Old Aug 18, 2018 | 07:28 AM
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If you pull out the glove box liner, you can reach the bulb and socket.
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Old Aug 18, 2018 | 09:45 AM
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I enlarged the hole in the lens plate and added a led bulb for brighter lighting.

Works great.
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