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  1. #1
    Forum Leader ImMrBill's Avatar

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    Battery Tender pigtail

    Ok I'm pretty much electrically challenged so here is my question. I want to install Battery Tender pigtail to my 2004 Sporty. I know the red goes to the positive cable which I have easy access to. Can I hook up the black negative wire to any bolt on the bike for a ground or do I have to use the battery post.


    The Sporty has the negative cable grounded down on the frame.

  2. #2
    Iron Butt smitty901's Avatar

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    Yes long as it is grounded Make sure you use a fused pig tail un-fused ones can become a nightmare
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  3. #3
    Forum Leader ImMrBill's Avatar

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    Thanks Smitty

  4. #4
    Road Warrior Bob Loblaw's Avatar

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    I would also ensure that the screw (bolt) you place it under has some good contact with the steel of the frame.....often when picking up a ground, trouble starts when the screw is loose (or the tapped hole is slightly too large), paint gets between the screw and your wire, rust/corrosion builds up losing your contact, wire vibrates too much and gets loose (or broken). Try to use a crimp terminal on the end of the wire also.


    I would also offer....since, what you are connecting is the battery tender, which is intended to float charge the battery, the best place for these particular connections would be the battery terminals themselves.
    Last edited by Bob Loblaw; 07-25-2017 at 06:51 AM.
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  5. #5
    CHARTER MEMBER Jaystronghawk's Avatar

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    Owning an 04 Sportster have no clue why the put the Negative Side is inside the far and hard to reach Terminal which is supposed to come off first but it is doable ..
    2005 Dyna FXD Stage 2/ 2017 Chieftain Dark Horse

  6. #6
    Forum Leader ImMrBill's Avatar

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    Yeah I loosened everything and tugged on the battery and it came out a few inches so I thought I'd try a ground wire other than the negative cable. But I'll try getting the Battery out again tomorrow.

  7. #7
    Road Warrior Bob Loblaw's Avatar

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    Click here to enlarge Originally Posted by ImMrBill Click here to enlarge
    Yeah I loosened everything and tugged on the battery and it came out a few inches so I thought I'd try a ground wire other than the negative cable. But I'll try getting the Battery out again tomorrow.

    certainly not a deal breaker as (like Smitty alluded too), based on how the DC system works, any negative will get you a completed loop. Can you access the point where the battery terminal connects to the frame (another good point)? I try to get as close and solid a connection to the battery terminals as possible for the Battery Tender, and this is partially for peace-of-mind (which is a consideration for me), also (of a somewhat lesser consideration) is the lower resistance in completing the loop for a more efficient function of the tender itself.
    Freedom's just another word for nothing left to lose!

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