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Retrofitting LED Cluster in a HH Karizma/R Taillight

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  • Retrofitting LED Cluster in a HH Karizma/R Taillight

    All right guys, this is my first DIY post.

    Since many days i was planning to do something with LED to my bike's tail light, not only is it bright, it consumes very less power.

    Since, my battery got discharged recently, i thought to myself it was high time, to get things done/ Do it myself...

    At first i was searching for LED clusters with a double filament bulb connector, which are readily available in the market,
    to my surprise, nothing of this sort was available after searching for long.

    Finally i decided to do it myself..
    I was pretty confused as to which shape the LED's would look good, i chose to do it in a round shape..

    THINGS REQUIRED:

    1. LED's number depends on what shape you like, for me it was 24 per cluster.
    2. Resistors: for bikes its best to get a higher value resistor, coz when the bike is in motion the voltage is never 12V, it varies from 11.5V - 14.0V. so i used 180 Ohms resistors in series with 3 normal 8mm white LEDs
    3. PCB you need something to mount the LED's on.
    4. Soldering Iron, Solder, Soldering Flux/Soldering cream, wires (i used a very very old soldering iron)

    5. Pliers (preferably nose plier).

    Ok , now we're ready to go..

    Setting things up

    - Mount the LED's on the PCB as you desire.
    I did it the following way


    - Figure out how you are comfortable soldering the LED's on the PCB.
    - Do the Calculations and draw the ckt diag. for your ease.
    Here is mine

    - Start by the tail light.



    - Do the rest of the Soldering carefully and its better if you do it 3 Led's and a resistor at a time.
    after you're done, it'd look something like



    - Now, unscrew the tail light cover, and take out the bulbs, You dont need to break a perfectly fine bulb, I got 2 fused bulbs from the HH Workshop



    - Figuring out the negative terminal of the bulb is a tricky 1, in some bulbs the positive lead has a sleeve under the glass encasing, if not, you'd have to connect it to a series of 3 LED and a resistor and find out. coz filament bulbs dont have specific polarity, but LED's do..

    - After you have done this, you are ready to go, cut the PCB with a BIG Scissor (the metal 1 that tailors have or wire cutters can do the job) , so that it fits in the chamber.

    Sorry could not click the pictures of mounting on the holder (was running out of time)
    - I mounted it using metal wires and power grip tape, until my M-seal model is ready.
    - I also used 6 Led's on the top of the chamber on a small PCB with 2 resistors. i used insulation tape on it..
    - Was a tedious job mounting both the things.
    - After I put back the tail light cover, it looked something like.

    Tail Light



    Brake light




    The images dont do justice, in real world they are very bright,
    I doubt on the reliability of the adhesive tape, would do the M-seal really soon..

    The main advantage of LED's..

    Previously the Power hogging bulbs consumed (5W / 21W) X 2 that is 52W the power consumption is around 4.3A

    now with the LED's the total power consumption is around 190mA X 2 that is only 4W on braking


    This was the first time i did something of this sort on my bike, comments are encoraged, if any queries, do lemmi know
    Last edited by pronoy_banerjee; 03-20-2011, 03:24 AM. Reason: Added Watermarked Images


    You are NOT What u ride.. you are HOW you ride...

    sigpic

  • #2
    DIY approved.
    (Been There Done That) x 3.25

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    • #3
      Good job!
      Originally posted by pronoy_banerjee View Post

      You have soldered the components on the opposite side here..LEDs may not be attached to the pcb and may become loose..not much of a problem as far as the setup works..
      This is correct..


      I too have done a similar LED setup for my tail lamp.
      tђє รเlєภt รt๏г๓

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      • #4
        Originally posted by fayad555 View Post
        Good job!

        You have soldered the components on the opposite side here..LEDs may not be attached to the pcb and may become loose..not much of a problem as far as the setup works..
        This is correct..


        I too have done a similar LED setup for my tail lamp.
        Yes i realized it later..


        You are NOT What u ride.. you are HOW you ride...

        sigpic

        Comment


        • #5
          Nice work.

          Are the resistors not getting heated up.
          Speed Thrills Only if U have the skills... Wear Helmets.. & Dont mess with big dad...

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          • #6
            Originally posted by rajr View Post
            Nice work.

            Are the resistors not getting heated up.
            Resistors do get heated, but not to a catastrophic extent.


            You are NOT What u ride.. you are HOW you ride...

            sigpic

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            • #7
              Wow wow wow!!!!

              Brilliant work. Very thoughtful too when it comes to power consumption. Makes sense! Thinking of doing something like this for my tail lamps and indicators as well. It's in the pipeline and will post pics once its done.
              We are miles away from the routine.
              Headlights rise over the horizon.
              Pierce the morning fog.
              Cut through the clutter in our minds.
              Carve new highways!

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              • #8
                where to get these LEDs and resistors from?
                My Stable.....
                Yamaha Libero G5 (2008-present)
                Yamaha YZF-R15 (2009-Present)
                Kawasaki Ninja 250R (2011-Present)

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                • #9
                  The LEDs should have been on the other side of the board for better aesthetics.
                  Your biking tells a lot about the person you are!

                  Comment


                  • #10
                    Originally posted by rajr View Post
                    Nice work.

                    Are the resistors not getting heated up.
                    The resistors do get heated up if they are in parallel, try using higher watt capacity resistors, thought they will heat, but they wont burn out.
                    30+ YEARS OF RIDING
                    1987-93 1990-96 1996-98 2003-05 2003-12 2012-15 2014-19 2015-XX 2020-XX
                    Kawasaki Bajaj
                    KB-100
                    Yamaha
                    RX 100
                    Yamaha
                    RXG
                    Scooty
                    PEP
                    Honda
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                    Activa-i Activa 125 Yamaha R3

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                    • #11
                      Originally posted by rajr View Post
                      Nice work.

                      Are the resistors not getting heated up.
                      The resistor do get heated when installed in series. Use higher watt capacity resistors either 1watt or 2 watt will be safe.
                      30+ YEARS OF RIDING
                      1987-93 1990-96 1996-98 2003-05 2003-12 2012-15 2014-19 2015-XX 2020-XX
                      Kawasaki Bajaj
                      KB-100
                      Yamaha
                      RX 100
                      Yamaha
                      RXG
                      Scooty
                      PEP
                      Honda
                      Activa
                      KTM
                      Duke 200
                      Activa-i Activa 125 Yamaha R3

                      Comment


                      • #12
                        Originally posted by Janesh.J View Post
                        The resistor do get heated when installed in series. Use higher watt capacity resistors either 1watt or 2 watt will be safe.
                        Me think why the resistors ...If you link 4 or 5 LEDs in series can we do away with resistors altogether ? Also since power consumption is being drastically reduced , we could plonk in much more numbers of LEDs .
                        sigpic

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                        • #13
                          Originally posted by acs1207 View Post
                          Me think why the resistors ...If you link 4 or 5 LEDs in series can we do away with resistors altogether ? Also since power consumption is being drastically reduced , we could plonk in much more numbers of LEDs .
                          The thing about bike electrical is that, the voltage does not remain constant, which is the basic reason why the resistors are needed, moreover, there wont be any space for more number of LED's


                          You are NOT What u ride.. you are HOW you ride...

                          sigpic

                          Comment


                          • #14
                            Combination LED tail+brake lamp circuit for better efficiency & space management

                            here's link to my circuit for a combined LED brake+tail light, its more efficient than separate LED cluster for braking & tail lamp... the LED's brightness increases while braking...
                            https://www.facebook.com/photo.php?f...type=3&theater

                            link to images of circuit being tested...
                            https://www.facebook.com/photo.php?f...type=1&theater
                            https://www.facebook.com/photo.php?f...type=1&theater

                            link to images after installation...
                            https://www.facebook.com/photo.php?f...type=1&theater
                            https://www.facebook.com/photo.php?f...type=1&theater
                            Last edited by Abhijeet Bhattacharjee; 10-07-2011, 01:25 PM. Reason: Broken link to image
                            Its the fusion of a two wheeled machine & a human being which creates a true biker.

                            Fine me on facebook: https://www.facebook.com/krazzykid.abhijeet

                            Pulsar spare parts price list (indicative only):
                            http://www.scribd.com/doc/42303845/P...re-Parts-Price
                            http://www.scribd.com/doc/99085008/Bajaj-180-Pulsar-UG3

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                            • #15
                              My setup

                              i have done a similar mod on mY HH Splendor
                              I thought some one can benefit or take ideas from my setup.

                              A good website for calculating Resistor values is LED series parallel array wizard

                              Cost
                              perf board 25
                              leds 2*10=20(5mm led red)
                              2*6=12 ultrabright white

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