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What is this light?

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Old Apr 20, 2020 | 09:11 PM
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Default What is this light?

Have the center console out to fix some other wiring stuff and got me wondering what this lamp is supposed to be for? It's at the very top of the center console on my '77. It's obviously wired separate from the PCB, but I don't ever recall it being on. And if it was on, would I have even noticed? It looks like it's in an enclosed space. Maybe it's performing some special function that I'm not aware of...


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Old Apr 20, 2020 | 09:17 PM
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It uses a special bulb with a magnifying tip and shines down to illuminate the heater/A/C controls.
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Old Apr 20, 2020 | 09:21 PM
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I thought it was a primitive map light. A little lever blocks it off.
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Old Apr 21, 2020 | 07:01 AM
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GE-558 Bulb, as Greg said has a magnifying tip at the end. Some complain it doesn't do much, my controls light up just fine at night.

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Old Apr 21, 2020 | 08:07 PM
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Ahhh. This makes sense. It looks like at some point along the way, mine was switched out with a regular old bulb. The bulb worked when I tested it while the console is out, but I never noticed it doing anything while it was in. Thanks for the reply!
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Old Apr 22, 2020 | 01:13 AM
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This is not one of Chevrolet's best designs. This set up never did light up the heater controls very well but there is a huge difference between using the correct bulb like bmotojoe posted and using just a regular 194 bulb, which most cars seem to end up with.
Cheers, Greg
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Old Apr 22, 2020 | 07:09 AM
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It's hard to see through your bulb socket hole, but there should also be a small blue filter lens placed in the lower lens housing.
Willcox Link: https://willcoxcorvette.com/corvette...l-center-77-98
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Old Apr 26, 2020 | 10:49 AM
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In case anyone else needs to replace this bulb with the correct one, I couldnt find the right one at any of the local auto stores. I ordered online at this link:
https://www.surplusshed.com/pages/item/M4494.html
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