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XJ550 Headlight Only Turn On When Running?

Discussion in 'XJ Technical Chat' started by Brodie, Mar 19, 2010.

  1. Brodie

    Brodie Member

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    Hey guys,

    I been working on my XJ550, I currently have the carbs off to rejet them and I got to dinking around with relocating the fuse box and some other stuff. When I went to test that everything works after relocating it, the headlight doesn't turn on when I turn the ignition on. I can't remember if it turns on when the ignition is on, or if the bike has to be started. Anyone care to enlighten me?
     
    Brodie, Mar 19, 2010
    #1
  2. BlackMax

    BlackMax Member

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    The engine has to be running,I think its to save the battery.
     
    BlackMax, Mar 19, 2010
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  3. SilverSeca

    SilverSeca Member

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    Yes, mine come on when the engine is running. Display panel, tail and license plate do light up w just ingnition on.
     
    SilverSeca, Mar 19, 2010
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  4. Brodie

    Brodie Member

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    Awesome, thanks for the quick replys guys. I thought for sure I messed something up or blew my headlight out.
     
    Brodie, Mar 19, 2010
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  5. ZaGhost

    ZaGhost Member

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    Hmmmm here's a question, Is this done with a realy?
    In my 400, headlight comes on as you turn the key.
    I'd like to reserve the extra current for starting.
    Methinks I need a peek at the 550 wiring diagram :)
     
    ZaGhost, Mar 21, 2010
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  6. TIMEtoRIDE

    TIMEtoRIDE Active Member

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    A special relay with a "latch" I think a diode or something.
    If you have a really good battery, it can come on with just cranking.
    Once energised the "latch" keeps it "ON" even if you stall.
     
    TIMEtoRIDE, Mar 21, 2010
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  7. PainterD

    PainterD Active Member

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    I'd like to get one of those for my other bike to keep the headlight off until it's running. I know the starter switch on my Honda disconnects the headlight when you press the starter switch, but it would be nice to not have it come on until the engine fires. That way I can turn the switch on while working on it without so much strain on the battery. Looks like a pretty easy mod to do.
     
    PainterD, Mar 21, 2010
    #7
  8. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    It's done with the headlight relay.

    PM me with an email address and you've got one.
     
    bigfitz52, Mar 21, 2010
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  9. PainterD

    PainterD Active Member

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    How much $$ for one? Is it something I can find at Radio Shack or an auto parts store maybe? I might be interested.
     
    PainterD, Mar 21, 2010
    #9

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