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Why does your negative side of the battery arc when you touch cable to neg post This is on an old ford tractor?

There are a few reasons why the negative side of the battery might arc when you touch the cable to the negative post on an old Ford tractor.

* Poor grounding. If the negative terminal of the battery is not properly grounded, it can cause the current to flow through the metal of the tractor, which can cause arcing.

* Faulty cable. If the cable that connects the negative terminal of the battery to the negative post is damaged or corroded, it can also cause arcing.

* Dirty or corroded battery terminals. Dirty or corroded battery terminals can also cause arcing.

To prevent arcing, you should make sure that the negative terminal of the battery is properly grounded, that the cable that connects the negative terminal to the negative post is in good condition, and that the battery terminals are clean and free of corrosion.

Here are some tips for preventing arcing when connecting a battery:

* Make sure that the negative terminal of the battery is properly grounded.

* Check the cable that connects the negative terminal of the battery to the negative post to make sure that it is in good condition.

* Clean the battery terminals if they are dirty or corroded.

* Use a wrench to tighten the nuts or bolts that secure the battery cables to the battery terminals.

* Be careful not to touch the positive and negative battery terminals at the same time.

By following these tips, you can help to prevent arcing when connecting a battery.