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How to convert to LED's and still have everything work

Discussion in 'XJ DIY How-To Instructions' started by SQLGuy, Nov 7, 2008.

  1. Ahks

    Ahks New Member

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    So the LED everything mod will eventually get worked into my current project...

    The EFI will live in my dreams... I'm saving that entire page to my "porn" folder...

    (porn folder = my folder of dream projects for cars and motorcycles)
     
  2. stephen.g.fiddes

    stephen.g.fiddes New Member

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    Bringing up an old thread....

    OK, so from my understanding, I want to buy the LF1-S-PIN flash relay.
    http://www.superbrightleds.com/cgi-bin/ ... 1-PIN.html



    [​IMG]
    Just to make sure I am reading this diagram correctly, the grey wire goes directly to the battery (via the wire for the existing relay), and the black wire goes to the turn signal switch on the handlebar (via existing wire). Am I correct?

    I am not worried about the autpo-cancel at this point. I'll deal with that later.
     
  3. Metal_Bob

    Metal_Bob Active Member

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    For those that can aford it (sub 100 I think) many vendors now sell modules for proper led flashing and original autocancel or time based flashing, sometimes with brake flash options.

    This won't help with Atari warning lights but oh well.
     
  4. quikcobra

    quikcobra Member

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    Do you have a picture of the before and after?
     
  5. mandrews

    mandrews New Member

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    I'm in the process of rewiring my '80 XJ650, and I'm finding that the relays are mostly connected to plugs in the headlight. Is there a reason why they are originally located so far away? Would there be a problem (interference in the Diode, other relay, etc.) if I rewired the relays to be in the headlight with the rest of the wiring?
     
  6. Metal_Bob

    Metal_Bob Active Member

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    From the 1st post in this thread:
    Has anyone actually done this? It is never mentioned in other posts. Usually just buy an electronic flasher till you find one that works...

    I can live w/o the auto cancel but I'd like to try this added step.

    I bought two 68 smd LED 1157 bulbs for my Windjammer fairing and I recently ordered K&S's DOT LED turn signals for the rear. So I'm hoping the flasher I ordered and the extra SPDT will work out...

    P.S. I'll probably move the flasher and the extra relay to my "fake" headlight bucket hidden behind my fairing.
     
  7. bigfitz52

    bigfitz52 Well-Known Member

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    I think it's mainly a space consideration. There really isn't room for two or three more relays plus the self-canceler in the headlight bucket.
     
  8. shnuffy

    shnuffy Member

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    IS it possible to get those pictures back up?
     
  9. day7a1

    day7a1 Member

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    I'd love to see the pics...I second the motion to get the pics back up!
     
  10. Hzleyes63

    Hzleyes63 New Member

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  11. RickCoMatic

    RickCoMatic Well-Known Member

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    The Company:

    SignalDynamics.com

    Offers a host of Modules to aid in LED Conversions, plus "Dummy-load" devices that you can use to maintain the Self Cancelling feature on the bike.
     
  12. Hzleyes63

    Hzleyes63 New Member

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    I already have dummy loads on the tail light circuit b ut I still get tail lamp out warning light. I bought the dummy loads from V-LEDS and I was instructed to put them across just the parking light circuit only. SQLGuy figured out that the XJ750 has two monitoring circuits, one on the parking light circuit and one on the braking circuit. The replacement LEDS I have in tail light sockets work fine.
     
  13. 44Dave

    44Dave Member

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    I wish the pictures would come back, too. :(
     
  14. FtUp

    FtUp Well-Known Member

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    because I am a visual person (as are a lot of people here), I had to draw this out. the quoted text is copied from the op.

    "Wiring goes like this:
    Stock flasher connector Br wire goes to the common pin on the SPDT relay. (pin 30)
    The normally closed contact from the relay goes to the supply side of the electronic flasher. (pin 87a)
    The normally open contact on the relay remains unconnected. (87b not pictured)
    One of the relay coil pins goes to ground. (pin 86)
    The other relay coil pin gets connected to the stock flasher Y/G wire. (pin 85)
    The load side of the electronic flasher goes to the stock flasher Br/W wire."

    [​IMG]
    LED signal wiring diagram close
    by bmonkey36, on Flickr

    FU
     
    Last edited: Apr 5, 2015
    Franz and IronHD like this.
  15. FtUp

    FtUp Well-Known Member

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    now that I am finally getting around to doing this mod on my 83 maxim, I am learning a few things. one is that if you have a single signal indicator, you will have to install 2 diodes in the indicator wiring. my 550 seca has a right and left indicator and won't require the diodes. the other thing is that I can do this mod without cutting the main harness. the diodes will be installed in the cluster harness and can easily be replaced (or left in place) if I were to reverse the mod and go back to stock signal lights. I doubt that will ever happen. but you never know, I could end up selling it down the road to some purist that wants to put it back to stock, so there ya go. I will provide more details when I get the parts I just ordered from len next week.

    FU
     
  16. FtUp

    FtUp Well-Known Member

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    well I haven't received the parts I ordered yet, but I have made some progress. I picked up a couple diodes at radio shack (yes I am one of the lucky ones to still have a radio shack in my neighborhood). so the indicator light in the maxims grounds through the other side of the flasher system. goofy I know, but it works. therefore I have to connect one side of the indicator bulb to both signal wires through diodes and the other side of the bulb to a ground. turns out that the high beam indicator bulb grounds on the black wire in the indicator cluster harness. so the dark green wire ended up on the diodes and the chocolate wire got soldered to the black wire. the diodes are 200v 1 amp diodes. more than sufficient to run in either configuration.

    diodes 1.jpg

    diodes 2.jpg diodes 3.jpg

    liquid electrical tape is used where heat shrink tube cannot be slipped over the wire. I plugged it in for a quick test and it works perfectly.

    FU
     
  17. FtUp

    FtUp Well-Known Member

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    I never cease to be amazed at how quickly I get stuff I order from len. 2 days from Georgia to Seattle! and that's the cheapest shipping option. thanks again len! so I got the turn signal mod all wired up, without having to cut any of the main wire harness. I ordered some connectors from len to make it all possible. he has the male and female spade terminals I needed. I ended up breaking one of the female terminals trying to get it out of the terminal block, luckily I ordered extra connectors.

    side note: the connectors len has are not identical to the ones the 83 750 maxim uses in the headlight and turn signal flasher connector. they will work, but you have to pry their retainer prong way out to make it happen. a small amount of uninsulated connector also sticks out the back of the connector shell.

    connectors.jpg

    luckily that was the only connector I broke. I barely had enough wire to repair it too.

    I bought some male spade terminals to plug into the stock flasher connectors after I removed them from the connector shell.

    male spade 1.jpg

    then I insulated the connection with heat shrink tube. if I ever wanted to reverse this mod, I could just cut the heat shrink off and plug the connector back into the shell.

    male spade 2.jpg

    the spdt relay rests on the inner fender on the left and the brake light flasher can be seen on the right side. I think I might mount them to the inner fender with vhb tape, but they both are nestled in and aren't going anywhere, so maybe not. the ground for the relay is on a ground point that is also the lower left mounting bolt for the air box. you can see the one red wire on the left.

    spdt.jpg

    at this point, you are probably thinking, "omg! he used red wire for everything!", yup, I sure did. it's all I had sitting around and I know what goes where.

    edit: I don't know why the last pic is rotated that way. it should be 90 degrees to that, and I don't know how to fix it.

    anyway, that's it. easy peasy! I tried spinning the front wheel to activate the auto cancel, but I could not spin it fast enough to even register on the speedometer.

    FU
     
  18. IronHD

    IronHD New Member

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    Where do you get the spdt relay?
     
  19. k-moe

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

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  20. IronHD

    IronHD New Member

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    Cool. Thanks!
     

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