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Old 06-01-2020, 05:43 PM
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CookieRoe CookieRoe is offline
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Location: Chester County, PA
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CookieRoe CookieRoe is offline
Senior Member
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Join Date: Mar 2010
Location: Chester County, PA
Age: 48
Posts: 3,803
Real Name: Ed
CookieRoe is a jewel in the rough CookieRoe is a jewel in the rough CookieRoe is a jewel in the rough
LEDs on HVAC help

Hello,

So, I recently "redid" my HVAC assembly using new 12v LEDs for the HVAC display. (long story). Anyway, as you may now, the factory backlight is 6v, I did a reverse polarization to my screen and am using (trying) 2 LEDs rated at 12v (I tapped the radio power). 12v+ coming from the radio power and the negative from the assembly's negative.

Following are the "sockets" for the factory bulbs that illuminate the HVAC display. Note the + and - . (positive side not used, but negative is for dimming)


So then, because my assembly was butchered (too much solder was placed onto the contacts, so a factory bulb or LED can no longer be "inserted"), an LED or bulb has to "sit" on top of it. For the negative part to make contact, I taped it hoping it would secure it. I was wrong.

I tried removing the excess solder, but was unsuccessful.

I used tape to secure bulbs in place.


Here is a picture when I hooked up the LED to the 12v wire. Obviously, no light.


Here is a picture when I put pressure on the bulbs. Doing this obviously makes the base make contact with the negative thus turning the LED on.


My question to ya'll is:

1) How/what should I use to adhere the bulbs? Soldering came to mind, but I'd rather not do that.

If you guys have any suggestions, let me know!
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Current: 2005 V6 Limited 4x4. SOLD: 2000 HiLux Surf SSR-G, 1997 HiLux Surf SSR-X Limited


Last edited by CookieRoe; 06-04-2020 at 12:26 AM.
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