HVAC LEDs

GatorFan · February 5, 2007

I just finished installing Blue LEDs in my HVAC controller. It is a lot more involved IMO than the 2003-Up controllers. Thanks to Chuck16 for giving me some good instructions.

It took me about 2 hours because of the amount of soldering I had to do . Looks great in the truck and almost matches my Blue LEDs in my new Instrument Cluster.

It was a little bit of a PITA unless you are good with a soldering iron (I'm not), but it came out great.

Check out my pics link in my sig to see what the HVAC board looked like before I put power to it. I need to lower the resistance on the main board because the LEDs are a little too dim for me, but the Recirc Air, Compressor, and Outside Air buttons are awesome looking.

Possessed666 · March 28, 2007

You wouldn't by any change have instructions on how to do this would you? I have been working on mine for a couple days now and can't ge them to all light up.

j.roffel · August 13, 2007

Know its an older thread but.... What size resistors did you use? I was using 330's and they were nice and bright, until I dimmed them down once and they never would come back on again....

Thanks for any help,

Jon

GatorFan · August 31, 2007

Know its an older thread but.... What size resistors did you use? I was using 330's and they were nice and bright, until I dimmed them down once and they never would come back on again....

Thanks for any help,

Jon

I think I used 770/780 resistors. The only problem is the buttons are REALLY bright and the knobs are dim. I will probably take it out and replace the ones on the knobs with lower ohm resistors to increase the brightness.

GatorFan · August 31, 2007

You wouldn't by any change have instructions on how to do this would you? I have been working on mine for a couple days now and can't ge them to all light up.

I know it's been forever since this question was posted, but here goes...

Basically you have to put a resistor inline with every bulb for the 99-02 HVAC controllers. You have to find out which side is positive on each location of the circuit board and solder the + side of the resistor and LED to the + side of the board and the same way for the - side. Once you have all of that soldered, plug it in BEFORE you put everything back together and make sure it all works (learned that from experience).

It's a tedious process because you have to solder EVERY light/resistor and there is not much room to work.

Check out My Truck Pics and it should show you some pictures of the board and LED/resistors as I did this project.

PM me if you have anymore questions.