Hacked Gadgets Forum

August 13, 2006

LED Dash Light Hack

at 5:53 am. Filed under DIY Hacks, Electronic Hacks

Tired of replacing burnt out dash lights? Why not replace them with LED lights, you will never have to touch them again. :)

“Now you will need to assemble your LEDs. Take an LED and figure out what side is positive and the other negative. The longest leg of an LED is positive (anode; a), and the shortest leg is negative (cathode; k).
Another way of checking which side is positive or negative is by looking on the side on the LED. The side that has a flat side on the bottom is the negative side / leg.”



 

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8 Responses to “LED Dash Light Hack”

  1. BronzeG3 Says:

    Sounds good, but the light is really uneven. I would probably add more LEDs to balance the color out a bit more.

  2. James Says:

    There are 5mm and 3mm T-wedge globes in most colors available from auto accessories stores now for a couple of dollars a pair. They incorporate both an LED and resister, inside a concave clear lens which scatters the light so it’s much more even. Plug and play!

  3. Smarter than you Says:

    Uh, LED lights don’t last forever. hahaha

  4. Alan Parekh Says:

    Hey Smarter,

    I guess forever is a long time :) but 100,000 hours will definitely outlast the usable life of the car.

  5. Weiss Says:

    To get a more “even” ligght you can rub the LED on some fine sandpaper.
    I’ve done it my self and you can see the reslut here http://www.ackw.dk/div/billedlys.htm
    (sorry that it is i danish but you can see what i mean)

  6. Tim Says:

    Sounds good but can you still dim them at night if they are too bright?

  7. chris Says:

    How did you regulate the 12v down to 3-4.5v for led use? I used the common 7805 trans.

  8. chris Says:

    how did you regulate the 12v down to 3-4.5 for led use? i used the common 7805 trans. in my 72 cutlass.

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