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XJ750 Seca Led Light problem

Discussion in 'XJ Technical Chat' started by Tafshaft, Apr 7, 2023.

  1. Tafshaft

    Tafshaft Member

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    Hey, I got a 1982 XJ750 Seca, I changed brake light, headlight, speedo, & turn signals to led.

    I have everything working except for the signals which are just on and don't blink, I tried resistor's and a led relay but nothing happened. I need help in getting them flashing again.

    Is it possible to make the relay work with lower current? I was looking on a post on xjbikes but it seemed to complicated on DIY'ing so is anything available online to help? (I can try DIY if it's straight forward)
     
    Tafshaft, Apr 7, 2023
    #1
  2. bensalf

    bensalf Well-Known Member

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    the led,s wont draw enough current to operate the original flasher relay.
    led's in parallel with resistors (of the correct resistance) will work the original relay
    an electronic flasher relay should work the led turn signals, though you would loose any self cancelling
     
    bensalf, Apr 7, 2023
    #2
  3. Tafshaft

    Tafshaft Member

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    I'm not planning on using resistor's, I did use them but it ended up using a ton of power which I didn't plan on. (Weren't flashing)
     
    Tafshaft, Apr 7, 2023
    #3
  4. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    k-moe, Apr 7, 2023
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    ksigurdsen likes this.
  5. Tafshaft

    Tafshaft Member

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    Looked at that post but it seems pretty complicated.
     
    Tafshaft, Apr 7, 2023
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  6. Mezzmo

    Mezzmo Active Member

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    All you need to do is swap your stock flasher unit with a new one that suits LED's. These are not expensive and are pretty common...
     
    Mezzmo, Apr 8, 2023
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  7. Tafshaft

    Tafshaft Member

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    I did do that but it seemed not to work, the post k-moe linked said that just changing the relay would not work because of the self cancelling unit.
     
    Tafshaft, Apr 8, 2023
    #7
  8. Rooster53

    Rooster53 Well-Known Member Premium Member

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    You need to use a 2 terminal LED relay, or use the 3 terminal and modify how the harness connects

    I think Len carries all the options
     
    Rooster53, Apr 8, 2023
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  9. Tafshaft

    Tafshaft Member

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    The xj 750 takes a 3 terminal so I should go with 3 terminal, I'm not sure what you mean by modify how the harness connects.
     
    Tafshaft, Apr 8, 2023
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  10. Tafshaft

    Tafshaft Member

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    I'm just looking to get the signal lights blinking with led lights, I don't really care about the auto cancel feature.

    Led relays should do the trick no? If so maybe I did something wrong.
     
    Tafshaft, Apr 8, 2023
    #10
  11. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    The third terminal of a stock relay is proprietary, and only allows the self-canceling feature to work. If you don’t care about that feature then use the 2 post relay mentioned on the first page of the previously linked thread. If you do then either source a OEM relay from @chacal or EBay, or use the two-relay mod on the second page of the previously mentioned thread.
     
    k-moe, Apr 8, 2023
    #11
  12. Tafshaft

    Tafshaft Member

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    Ended up ordering a 2 pin relay and that worked. I guess getting the 3 pin was causing the problems.
     
    Tafshaft, Apr 9, 2023
    #12
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  13. Douglas Johnston

    Douglas Johnston New Member

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    Are you just living with the blinking warning lights?

     
    Douglas Johnston, Jun 11, 2023
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  14. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Indeed it was. There are no 3-terminal flasher relays that will work on the XJ750. Yamaha's relay was proprietary and the third terminal is what allows the self-canceling to function.
     
    k-moe, Jun 11, 2023
    #14
  15. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Start a thread for your bike please.
     
    k-moe, Jun 11, 2023
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