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Minimal wiring

Discussion in 'XJ Technical Chat' started by saftie, Jul 8, 2015.

  1. saftie

    saftie Well-Known Member Premium Member

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    Just to clarify: I hook up the test light to the starter relay and use the connection that is normally used to go to starter motor, correct?
     
  2. Polock

    Polock Well-Known Member

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    here's what you have now
    battery+ .....to...... solenoid in.........solenoid out.....to.......starter
    you want to make it like this
    battery+ .....to...... solenoid in.........solenoid out.....to.......either wire of the test light.........other wire of the test light..........to.......ground
    nothing is hooked to the starter
    believe me, the battery can do a lot more damage than the charger.
     
  3. saftie

    saftie Well-Known Member Premium Member

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    Oh this is so beautiful...
    Hooked up an old turn signal as you described, hit the start button and it came on.
    I have all turn signals working as well.

    Thank you so much Polock. I have no idea where I would be without your help.

    Last thing is the brake switches which I need to order first.
     
  4. saftie

    saftie Well-Known Member Premium Member

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    Oh man... Now I know the bike cranks. Put the starter back on and touched the lead to the battery. Bike cranked, I jumped...

    Lesson learned
     
    Xythin likes this.
  5. XJ550H

    XJ550H Well-Known Member Premium Member

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    late to the party
     
    Last edited: Mar 29, 2016
  6. saftie

    saftie Well-Known Member Premium Member

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    Update on this one, maybe good for others: after a few months of having this wiring, there are no issues. However, not having the neutral light is somewhat annoying. And I am not even riding the bike yet. Something to keep in mind for others thinking about doing this.
    I will add it back to the bike. It's just a bit easier and more convenient.
     
    k-moe likes this.
  7. k-moe

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

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    There is a reason why many of us recommend that the minimal not be used without due consideration to the consequences.
     
  8. Polock

    Polock Well-Known Member

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    once you start riding it, neutral will become second nature. Then you'll put it neutral and look at the light to see if it still works.
     
  9. saftie

    saftie Well-Known Member Premium Member

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    Yes, after spending more time on the bike and riding it more, it shifts better and better. Neutral jumps in more easily now and I can tell much better whether it's in or not.
    I'll still wire it back in at some point. It's a good project to learn a bit more.
     
  10. Ddollar

    Ddollar New Member

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    This whole XJ BIKES websight is really awesome. Thank you for those pics of your wire harness to ignitor plugs.. I searched hi and low internet w/out luck as my ignitor was stolen and cut off . My replacement came today and with a little work i pray ill be riding bfore snow comes..
     
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  11. Adrian hills

    Adrian hills New Member

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    Hi guys

    I’m new to the forum so please excuse me if I’ve missed something, I’ve wired my 92 xj600 up as per white drawing at the top of the thread and it cranks but I’ve got no spark, any ideas?
     
  12. Leif Harrington

    Leif Harrington New Member

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    Having the exact same problem on an xj750. Can't figure it out.
     
  13. XJ550H

    XJ550H Well-Known Member Premium Member

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    2 year old thread

    Leif have you tested for voltage at the tci?

    also do a battery voltage drop test on the battery when cranking motor
    battery should be 12.8 volts then when cranked no go below 10 volts or tci will not fire

    then of course you want to confirm pin out of tci plugs if you made your own.

    you also want to ohm out the ignition system
    here are the specs
    XJ750 air-cooled models:
    Pick-up coils:
    650 ohms +/- 20% = 520 ohms to 780 ohms acceptable range
    Ignition Coils:
    Primary side (input from main wiring harness):
    2.5 ohms +/- 10% = 2.25 ohms - 2.75 ohms acceptable range

    Secondary side (spark plug wires, without their end caps):
    11K ohms +/- 20% = 8,800 ohms - 13,200 ohms acceptable range
    Spark plug caps:
    1981-83 models: 5K +/- 20% = 4,000 to 6,000 ohms per cap acceptable range
    1984 RL models: 10K +/- 20% = 8,000 to 12,000 ohms per cap acceptable range

    Spark plugs:
    0 ohms per plug
     
  14. XJ550H

    XJ550H Well-Known Member Premium Member

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    it would be best if you started your own thread in
    XJ Technical Chat

    Id your bike in title xj750 max or seca if max the year also
    tell us a little about the bike . like I removed the wiring harness and did min wiring,
    I am using stock or aftermarket handle bar controls
    and I am not getting spark
     

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