LED
Conversion for HVAC Unit
by
Ilanpro (Difficulty: medium)
(Note:
This project was done on an '04 GT)
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Materials Needed
Blue
LEDS (13)
Red
LEDS (4)
Resistors
Wide Angle 194 LEDS (3)
Foil
Paper
Krazy
Glue
Solder
Tools
Needed
Phillips Screwdriver
Soldering iron w/
fine tip
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The Project
1. Remove front fascia from the dashboard (four screws - 2 inside the ashtray
- 2 above the instrument cluster).
2. Remove the HVAC unit's four screws.
3. Unplug the unit from the back
4. Remove the knobs by pulling them off.
5. Remove the original bulbs.
6. On the back of the unit remove the 4 Phillips screws on the corners to open the
unit as well as the screw for the speed Potentiometer (middle) with a slight twist remove the Potentiometer.
7. On the top and bottom there are 4 tabs; carefully pry them with a small screwdriver
to access the circuit board (once opened you have just voided the warranty!)
8. Without touching the circuit board unscrew it to totally removing it.
9. Put the circuit board aside.
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Click here for some cool project photos
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10. The backs of the controls have
some crystal-like plexy used to make the light spread evenly. Glue the blue LED's on the fan speed control bottom pointing
towards the plexy and repeat this to the selector and same to the temp. control. On the temp control place a red LED
to the hot side making sure you keep the anodes pointing up and the cathodes pointing down.
11. Then in the middle of the plexy (pointing towards the knobs) drill a sinker hole
to glue a red LED.
12. Solder your resistors in place with 2 LED's per resistor.
13. Place all the negative points together into a cable long enough to reach one
of the holes.
13. Wrap the plexy with aluminum foil to make a better reflection (make sure you
tape the leads from the LED's, the foil will conduct energy).
14. Assemble the unit and solder the wide angle LED's (194's) You don't need resistors on these. The positive (+) side is the bottom. Note: Be certain you've
determined the positive side (+) before soldering!
15. Cut the cover to fit the LED's for assembly.
16. Re-Assemble.
17. Enjoy your stylish new HVAC controls!
- Ilanpro
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