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Climate control bulb replacement

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Old Nov 13, 2017 | 01:31 PM
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Default Climate control bulb replacement

Working on my 2000 with dual zone climate control. I soldered the 8 pieces to fix the dim display. While I was in there I decided to replace a few of the burned out bulbs. Now, most of the lights don't work and the passenger side temp adjuster is no longer working. I believe it is fubar.

Does anyone know how to power the lights on the control without plugging it in the car?

Thanks in advance
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Old Nov 15, 2017 | 03:38 PM
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Originally Posted by Robrote
Working on my 2000 with dual zone climate control. I soldered the 8 pieces to fix the dim display. While I was in there I decided to replace a few of the burned out bulbs. Now, most of the lights don't work and the passenger side temp adjuster is no longer working. I believe it is fubar.

Does anyone know how to power the lights on the control without plugging it in the car?

Thanks in advance



Just hook it up to a 9V battery
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Old Nov 15, 2017 | 03:48 PM
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Originally Posted by AE Guy


Just hook it up to a 9V battery
Where do you hook it up? Just anywhere on the board or on the connector?
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Old Nov 15, 2017 | 03:59 PM
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Originally Posted by Robrote
Where do you hook it up? Just anywhere on the board or on the connector?






Positive to the back of a positive lead, negative to the back of a negative lead, in the light schematic above.
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Old Nov 15, 2017 | 04:04 PM
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This pic is twisted, but you should get the point.
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Old Nov 15, 2017 | 04:06 PM
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Originally Posted by AE Guy



This pic is twisted, but you should get the point.
Appreciate it. I'm going to dig back in to this weekend and try to get er lit back up. It's fighting me.
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Old Nov 15, 2017 | 04:08 PM
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Originally Posted by AE Guy



This pic is twisted, but you should get the point.
Can you confirm or deny that I purchased the correct replacement lights?
Amazon Amazon
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Old Nov 15, 2017 | 04:21 PM
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Originally Posted by Robrote
Can you confirm or deny that I purchased the correct replacement lights? https://www.amazon.com/CEC-Industrie...81QNZRSMRBD6V3
I would think those would work, but I have no experience with them, so I can't say for sure. There are many threads about this proceedure on the forum that you can research.

I bought T4 neo wedge LEDs and took them out of their housing (below).









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Old Nov 15, 2017 | 10:21 PM
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Originally Posted by Robrote
Can you confirm or deny that I purchased the correct replacement lights? https://www.amazon.com/CEC-Industrie...81QNZRSMRBD6V3
Those do appear to be the correct part.

Gary
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Old Jan 27, 2018 | 02:23 PM
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Just to clarify, what is the correct bulb to buy to replace these? I don't want to go to LED as I'm afraid of getting blinded by science at night. Is there a specific part # or do you just kinda guess & hope for the best? Thanks!
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Old Jan 27, 2018 | 03:39 PM
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Look thru this thread https://www.corvetteforum.com/forums...splay-fix.html You will find 2 different part #'s for the bulbs from Radio Shack. The bulb I used in that thread is easier solder in place as it does not have the flimsy wires that the stock bulbs use
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Old Jan 27, 2018 | 05:00 PM
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Originally Posted by Scholioso
Just to clarify, what is the correct bulb to buy to replace these? I don't want to go to LED as I'm afraid of getting blinded by science at night. Is there a specific part # or do you just kinda guess & hope for the best? Thanks!
Here you go. These are the ones i used. Worked perfect.

Amazon Amazon
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Old Jan 28, 2018 | 04:47 PM
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Originally Posted by Robrote
Here you go. These are the ones i used. Worked perfect.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
FYI - those 7219 bulbs have less than half the resistance of OE bulbs - they will run hotter and more current will flow through them. I went down this road a few months ago and ordered these bulbs based on the forum. When I measured the resistance of the OW bulbs, I believe they were about 38 ohm - i forget exact value but I am very close. These bulbs come in at about 17.5 ohms.

Last edited by Ed Ramberger; Jan 28, 2018 at 04:56 PM.
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Old Jan 29, 2018 | 09:47 AM
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Originally Posted by Ed Ramberger
FYI - those 7219 bulbs have less than half the resistance of OE bulbs - they will run hotter and more current will flow through them. I went down this road a few months ago and ordered these bulbs based on the forum. When I measured the resistance of the OW bulbs, I believe they were about 38 ohm - i forget exact value but I am very close. These bulbs come in at about 17.5 ohms.
So, did you come up with a better alternative?
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Old Jan 29, 2018 | 11:24 AM
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I did a fair bit of research when I did mine and determined that ones I used were the right ones. They've been in for 6 months or so. No issues. I'd also like to hear the better alternative.
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Old Jan 29, 2018 | 12:01 PM
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Originally Posted by Scholioso
I don't want to go to LED as I'm afraid of getting blinded by science at night.
LEDs vary a great deal in durability and lumen production. Also, I trust you know they usually are polarized and diodes only allow current flow (light up) in one direction. Resistors are not polarized.

My bulbs are okay, hence no replacements, but I am a fan of cooler-running LEDs, especially in proximity to plastic.

I found it easy, especially for the first 1 or 2 of those surface-mount resistors, to get poor solder connections, so suggest you ensure all are not 'cold'.

Last edited by whalepirot; Jan 29, 2018 at 12:02 PM.
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