Sequential Led Tail light setup

Discussion in 'Technical' started by 77comet, Nov 13, 2013.

  1. 77comet

    77comet Member

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    I have been playing around with modifying an existing Led trailer light and adapting it the Maverick Lens. Here is a video linking the result.










    For anybody who is interested, it involves cutting just two traces on the trailer light, dividing the light into three segments.
    The sequencer is a little more difficult, but not impossible for someone with basic soldering skills. I used a box that I designed years ago in tech school. It's a little more complicated than needs be, but I have included schematic for a simpler circuit. All the parts should be able to be obtained through any electronics supplier such as digikey. It was floating around the internet about 10 years ago. The circuit does work, it delays the lights by a predetermined amount. I have found that the sequence effect looks better if the values 240K and 470K are each doubled, or better yet replaced with potentiometers and the delay dialed in. An extra line should be run to the indicator to allow sequencing during braking only. If one sequence is acceptable during braking than this can be tied into the existing wiring. A electronic flasher is required, The Led's don't draw enough current to trip the basic thermal flasher.
    I hope this is of some help to Maverick owners who like sequencer effect but don't want to modify the original tail panel for a three bulb lens.
     

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    Last edited by a moderator: Aug 3, 2014
  2. mav1970

    mav1970 Bob Hatcher

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    Pretty clever :thumbs2:
     
  3. Dave B

    Dave B I like Mavericks!

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    Sweet! You should break it all down, and do a full write up.
     
  4. 71gold

    71gold Frank Cooper Supporting Member

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    ...:thumbs2:...
     
  5. Paul Masson

    Paul Masson MCCI Atlantic Canada Rep

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    That is so cool, Kevin! Good Job!! :thumbs2:

    I agree with Dave, you should post an in-depth Tech Article.
     
  6. mavdog71

    mavdog71 Member

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    I will be weighting for your full tech article.
     
  7. cactusgrabber

    cactusgrabber Member

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    This is a fantastic idea...well done sir.

    In your circuit...what does the "turn indicator signal" connection go to/wire to?
     
  8. 77comet

    77comet Member

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    Hi CactusGrabber,

    I purchased the tach overlay from you several years ago. My Tach is working fine, I'm pleased with it. I put a few miles on the car this summer with no problems. I also have had some positive comments on the overlay at local car shows.

    The turn indicator is a separate wire which should be run for each side. It could be attached to anything that is powered by the signal only, dash indicator light, turn signal switch, front light etc. If you don't want to run another wire it could be tied to the existing turn/brake wire. the only problem is the lights will sequence once when the brakes are applied. The circuit turns off the P channel Fets during the delay period. Also, the circuit was designed to switch incandescent bulbs, a lower current P channel Fet could probably be sourced.

    As far as writing a technical article, CactusGrabber and many others have set the bar pretty high for the quality of technical articles. I think I should try an implement it on the car and see how it looks before we go too much further. I would prefer to have more Led's than my existing housing allows. It may be possible to modify an early Mustang setup which has more Led's. It would save the problem of building the board. Those sequencers can get expensive though.
     
  9. 77comet

    77comet Member

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    Here is a link to a short clip of the sequential light setup. The 4 way flashers give an indication of flash rate on both sides

    https://www.youtube.com/watch?v=tbfKQbdl5Dc


    Also here is a couple of pictures of the sequencer box which I built years ago to drive individual bulbs. It really is just two identical circuits of the schematic posted. The wiring has yet to be cleaned up.
     

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  10. cactusgrabber

    cactusgrabber Member

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    I really like it Kevin...you are doing a great job with this. I'll keep an eye out for future developments. :)
     

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