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2G LED HVAC Unit

Posted by spyderdrifter, Mar 3, 2019

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  1. spyderdrifter

    spyderdrifter Freelancer

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    Fountain, Colorado
    For the longest time, I’ve wanted to build a reliable, good quality lighting setup for my HVAC controls. I’ve tried many ways with various size LEDs, LED strips, and other things. I was never satisfied because I had to sacrifice the reliability or usability. I finally had an idea before my wife and I moved into our house, and finally made it happen now that I got a good place to work and test different variations. So, here is my new HVAC LED panel………………………..

    20190303_122513.jpg

    No more LED strips, or individual bulbs with wires hanging everywhere and getting tangled up, just a circuit board, some bulbs, a few resistors, and some time.....


    20190225_133022.jpg
    20190225_133045.jpg
    20190302_184320.jpg

    I have since found some boards long enough for the entire unit and only have one board instead of 3 soldered together. So my next one will be on that instead of these.


    I first wired the parts up in series and realized nothing worked when trying to power all 8 lights. So I rewired them in parallel and it now works fine.

    20190302_214320.jpg

    The back side is a bit of a mess, but I had to make sure I got it working. My next version will be organized a lot better.

    20190303_121530.jpg

    20190303_121840.jpg

    The light is still a bit too dim for my liking, and it's even being powered by a full 12 volts. So the next one will get LEDs that produce more lumens so it can be bright when needed, and still bright enough when dimmed in the car.
    20190303_122007.jpg
     
    Last edited: Mar 3, 2019

    1K  3

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM

    731  2

    1996 Eagle Talon TSi AWD
    awd · manual · 2G DSM

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    1999 Mitsubishi Eclipse N/T
    automatic · 2G DSM
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  2. jinscho

    jinscho Proven Member

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    Joined Jun 16, 2017
    Bangor, Pennsylvania
    So... When can I buy one from you? :thumb:
     

    Street Build 2K  12

    1999 Mitsubishi Eclipse Spyder N/T
    fwd · manual · 2G DSM
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  3. spyderdrifter

    spyderdrifter Freelancer

    3,283
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    Joined Jul 11, 2009
    Fountain, Colorado
    PM me....

    I do plan on building and selling these once I perfect the build, do the freelancer thing, and get things done properly.
     

    1K  3

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM

    731  2

    1996 Eagle Talon TSi AWD
    awd · manual · 2G DSM

    1K  5

    1999 Mitsubishi Eclipse N/T
    automatic · 2G DSM
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  4. brads

    brads DSM Wiseman

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    Joined Oct 24, 2002
    Alta Loma, California
    There are quite a few places you can get custom PCBs made cheap, and this project looks like a perfect place to do that. It would ensure the cutouts and LED positions are right every time, and distribute power/ground better for you.
    Also keep in mind the DSM dimmers act as a varying ground, and the lights get full ignition voltage on one side and this other varying voltage on the other. So if you are going to try to use the stock dimmer, you will need to sort that out.
    Looks like a fun project though.
     

    Street Build 1K  0

    1995 Mitsubishi Eclipse GSX
    manual · 2G DSM
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    lglracer likes this.
  5. lglracer

    lglracer Proven Member

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    Joined Jul 13, 2008
    Sacramento, California
    If you want to get more advanced an a little easier to build you can have the boards made to be ready drop in. You would just need to put all the LEDs, resistors, and inputs on there. I will be doing this with both my Galants since I would like a little more light output.
     

    Road Race Build 398  1

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM

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    1990 Mitsubishi Galant GSX
    awd · manual · Galant VR-4

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  6. lglracer

    lglracer Proven Member

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    Sacramento, California
    As long as the driving current is met with the LED it should be fine. The tricky part will be when the dimmer is low and the led is still on. I imagine it will just take a little math and testing to figure out.
     

    Road Race Build 398  1

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM

    Street Build 364  1

    1990 Mitsubishi Galant GSX
    awd · manual · Galant VR-4

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    1991 Mitsubishi Galant VR-4
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  7. brads

    brads DSM Wiseman

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    Joined Oct 24, 2002
    Alta Loma, California
    I pointed it out because of another risk. It is(or was) a common problem for people to try to hook a light up for a gauge to the dimmer with the other side grounded, thinking it would work like a traditional dimmer. But with the 2G dimmer that will mess up the function of the dimmer circuit, and no lights will dim, or they will not work as expected. IF he connects only to the existing dimmed bulb wires at the dash he should be fine, but if he tries to ground the circuit for any reason, it would cause issues.
     

    Street Build 1K  0

    1995 Mitsubishi Eclipse GSX
    manual · 2G DSM
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    T2Small likes this.
  8. Dreams Realized

    Dreams Realized Proven Member

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    Seattle, Washington
    I was going to try and do this during the summer when I do my full interior rebuild, but if you have these perfected by then... Than I will ask you to kindly take my money
     

    Street Build 567  5

    1997 Eagle Talon TSi AWD
    awd · manual · 2G DSM
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  9. ViciousLord

    ViciousLord Proven Member

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    Joined Jul 27, 2005
    Orlando, Florida
    I'm in for a set
     

    Street Build 551  1

    1997 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  10. spyderdrifter

    spyderdrifter Freelancer

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    Fountain, Colorado
    So everyone is informed, I do not plan to ground this in any way other than having it be a direct plug-in to the factory harness that normally powers the one light in the oem setup. I'm also going to be building one for a friend's Evo IX, so be prepared for those pictures in the not to distant future.
     
    Last edited: Mar 7, 2019

    1K  3

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM

    731  2

    1996 Eagle Talon TSi AWD
    awd · manual · 2G DSM

    1K  5

    1999 Mitsubishi Eclipse N/T
    automatic · 2G DSM
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  11. EVLGSX

    EVLGSX Proven Member

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    Wallingford, Connecticut
    nice work, looks great
     

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    1997 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  12. spyderdrifter

    spyderdrifter Freelancer

    3,283
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    Fountain, Colorado
    Got the new boards in. The picture doesn't show the size proportion that well, but it is perfectly sized. This is what will be built on from now on, unless I find something better of course....

    20190306_202740.jpg
     

    1K  3

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM

    731  2

    1996 Eagle Talon TSi AWD
    awd · manual · 2G DSM

    1K  5

    1999 Mitsubishi Eclipse N/T
    automatic · 2G DSM
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    Doubleot likes this.
  13. Techn0Nut1996

    Techn0Nut1996 Supporting Member

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    Joined Jan 20, 2017
    Ames, Iowa
    This is really neat! Great workQ I have been in the process of re-doing my rear view mirror with LEDs because for some reason there is a short. I am hoping it is in the mirror.. If I can eliminate the OEM bulb holders and rewire the LEDs into it I am hoping that the short is taken care of.
     

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    1998 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
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