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Loose battery cable

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Old May 23, 2025 | 11:13 AM
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Default Loose battery cable

Is this installed from factory or has been added by previous owner? Can't figure out what is this black cable



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Old May 23, 2025 | 11:51 AM
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It's factory. It gets crimped to a ring connector on the negative battery lug. I believe the area I boxed in red shows where it was broken off. This is pretty common unfortunately.

I took the screen shots from the below video to show you it properly connected.






This shows it close up.


Last edited by Zjoe6; May 23, 2025 at 12:11 PM.
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Old May 23, 2025 | 12:10 PM
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The black wire is a sensing wire important for proper battery charging. Just connect it back to the negative (black) battery cable. Splice in a few inches of black wire to add some slack. The wire is most often broken during a battery change.

Ron
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Old May 23, 2025 | 07:37 PM
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Thanks guys I fixed it.
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Old May 23, 2025 | 07:52 PM
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Originally Posted by RonC7
The black wire is a sensing wire important for proper battery charging. Just connect it back to the negative (black) battery cable. Splice in a few inches of black wire to add some slack. The wire is most often broken during a battery change.

Ron
Exactly what happened when I put in a new battery a few weeks ago. At least it's an easy fix. I took pic of old battery before removing
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Old May 23, 2025 | 08:03 PM
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There is a reason the wire is BLACK. It's the devil wire.
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Old May 24, 2025 | 08:31 AM
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Great that you reattached the wire - hopefully all is working properly now.
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Old May 24, 2025 | 07:23 PM
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good job!!
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Old May 25, 2025 | 05:23 AM
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Originally Posted by kodpkd
There is a reason the wire is BLACK. It's the devil wire.
Actually when you remove its insulation the cable was green/yellow. The same color code we use in Europe for ground on 220V. I was quite confused as its not a common color on cars and thought previous owner had his hands on that too
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