1. Some members were not receiving emails sent from XJbikes.com. For example: "Forgot your password?" function to reset your password would not send email to some members. I believe this has been resolved now. Please use "Contact Us" form (see page footer link) if you still have email issues. SnoSheriff

    Hello Guest. You have limited privileges and you can't "SEARCH" the forums. Please "Log In" or "Sign Up" for additional functionality. Click HERE to proceed.

Parasitic draw ? Headlight

Discussion in 'XJ Technical Chat' started by Myxjbobberbuild, Mar 23, 2016.

  1. Myxjbobberbuild

    Myxjbobberbuild New Member

    Messages:
    16
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Plymouth meeting pa
    Having a charging issue. When the head light is unplugged bike charges fine when I plug headlight in charge drops won't charge above 12.6 at 2500 rpm and drains battery after about an hour of riding.when I unplug light it charges fine 14.2 and battery doesn't drop off ,any hints on what to look for?
     
    Myxjbobberbuild, Mar 23, 2016
    #1
  2. k-moe

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

    Messages:
    19,658
    Likes Received:
    6,762
    Trophy Points:
    113
    Location:
    The City of Seven Hills
    The headlight issue is a symptom, not the cause of the problem.
    Start at the source, and then we'll work our way forward.
    Pull the alternator cover. Clean the rotor traces, and check the brush length.
     
    k-moe, Mar 23, 2016
    #2
  3. Myxjbobberbuild

    Myxjbobberbuild New Member

    Messages:
    16
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Plymouth meeting pa
     
    Myxjbobberbuild, Mar 23, 2016
    #3
  4. Myxjbobberbuild

    Myxjbobberbuild New Member

    Messages:
    16
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Plymouth meeting pa
    Did clean rotor and changed brushes! Was thinking regulator/ rectifier on the outs? According to my multi meter all seems to working fine
     
    Myxjbobberbuild, Mar 23, 2016
    #4
  5. XJ550H

    XJ550H Well-Known Member Premium Member

    Messages:
    13,199
    Likes Received:
    3,862
    Trophy Points:
    113
    Location:
    Great North Woods
    What bike you talking about?

    14.2 volts is on the low side of good. How old is your battery? is it full of acid if not fill with distilled water only!
    have you cleaned the ground from battery to motor and frame?
    what wattage is the headlight bulb?

    start by reading the information in this link below

    The Ultimate Relay, Switch, Sensor, and Diodes Guide

    it is at the bottom of the pageRead the introduction first ELECTRICAL SYSTEM OVERVIEW:

    DOUBLE BONUS ROUND!! Charging System Electrical Specifications:
    from the bonus round
    "* approximately 500-2000 rpms: 1.8 volts gradually increasing to 14.2 volts
    * 2000+ rpms: 14.2 volts up to about 14.8 volts, with a maximum of 14.8 volts (all models except XJ700-X and XJ750-X)
    * 3000+ rpms: 14.2 volts up to about 14.8 volts, with a maximum of 14.8 volts (all XJ700-X and XJ750-X)
    If your charging voltages are too low, suspect the alternator brushes first, then perform the alternator stator and rotor checks as described in the Alternator Section."

    explains what tests you have to do.
    need more help ask on what you do not understand
     
    Last edited: Mar 23, 2016
    XJ550H, Mar 23, 2016
    #5
  6. XJ550H

    XJ550H Well-Known Member Premium Member

    Messages:
    13,199
    Likes Received:
    3,862
    Trophy Points:
    113
    Location:
    Great North Woods
    keep cleaning connections
     
    XJ550H, Mar 23, 2016
    #6
  7. k-moe

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

    Messages:
    19,658
    Likes Received:
    6,762
    Trophy Points:
    113
    Location:
    The City of Seven Hills
    Low voltage does not typicaly point to a faulty RR. As XJ said, keep cleaning connections.
     
    k-moe, Mar 23, 2016
    #7
  8. Myxjbobberbuild

    Myxjbobberbuild New Member

    Messages:
    16
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Plymouth meeting pa
     
    Myxjbobberbuild, Mar 24, 2016
    #8
  9. k-moe

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

    Messages:
    19,658
    Likes Received:
    6,762
    Trophy Points:
    113
    Location:
    The City of Seven Hills
    You keep quoting me without a response. Are you trying to ask a question?
     
    k-moe, Mar 24, 2016
    #9
  10. Myxjbobberbuild

    Myxjbobberbuild New Member

    Messages:
    16
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Plymouth meeting pa
    It's a 82 xj650, I'm gonna go over all the connections check the grounds and I have spare r/ r that I know is good I'll try that and I'll keep ya posted thanks to all for your suggestions and guidance . Just for future reference this bike was a basket case it's been chopped robbed and stripped. Putting it back together has been a real challenge as far as diodes and switches and relays this bike has none! Guess I should have noted this from the start!
     
    Myxjbobberbuild, Mar 24, 2016
    #10
  11. XJ550H

    XJ550H Well-Known Member Premium Member

    Messages:
    13,199
    Likes Received:
    3,862
    Trophy Points:
    113
    Location:
    Great North Woods
    has it been minimum wired?
    there is a doide block in the head light bucket that controls safety relays and other things its about 2" x1"x 3/8 inch thick with a rubber boot on it. you will need one if you go with original wiring
     
    XJ550H, Mar 24, 2016
    #11
  12. Myxjbobberbuild

    Myxjbobberbuild New Member

    Messages:
    16
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Plymouth meeting pa
     
    Myxjbobberbuild, Mar 24, 2016
    #12
  13. k-moe

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

    Messages:
    19,658
    Likes Received:
    6,762
    Trophy Points:
    113
    Location:
    The City of Seven Hills
    Better.

    Once you hit the reply button just start typing. The cursor should be after the last ] in the quote, otherwise you're typing inside of the text that you quoted.

    It looks like this:

    [​IMG]
     
    k-moe, Mar 24, 2016
    #13
  14. k-moe

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

    Messages:
    19,658
    Likes Received:
    6,762
    Trophy Points:
    113
    Location:
    The City of Seven Hills
    Hmmmm......

    I gotz an idea.
     
    k-moe, Mar 24, 2016
    #14
  15. k-moe

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

    Messages:
    19,658
    Likes Received:
    6,762
    Trophy Points:
    113
    Location:
    The City of Seven Hills
    [​IMG]
     
    k-moe, Mar 24, 2016
    #15
  16. Myxjbobberbuild

    Myxjbobberbuild New Member

    Messages:
    16
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Plymouth meeting pa
    Ok so I got the bike squared away, turns out reg/Rec was faulty switched it out started the bike VoLTz were up head light on no draw. Now if I can figure out this post a reply thing !!thanks for all the help guys!
     
    Myxjbobberbuild, Mar 24, 2016
    #16
  17. k-moe

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

    Messages:
    19,658
    Likes Received:
    6,762
    Trophy Points:
    113
    Location:
    The City of Seven Hills
    Good deal. That is a fairly uncommon type of failure for an RR, but it does happen.
     
    k-moe, Mar 24, 2016
    #17
  18. Myxjbobberbuild

    Myxjbobberbuild New Member

    Messages:
    16
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Plymouth meeting pa
    I think I got it now let's see
     
    Myxjbobberbuild, Mar 24, 2016
    #18

Share This Page