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Because if you reversed the polarity at the battery it would blow the fuse through which current flows to the drain.

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17y ago

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Is the battery in an Sl500 battery positive or negative ground?

Batteries are neither positive nor negative ground. It is the circuit itself that determines the common ground. For example: If I have two circuits, one needing 6vdc negative ground and the other needing 6vdc positive ground, the battery would be installed the same way in both circuits (positive terminal on the battery to the positive connection in the circuit, regardless of whether the circuit is positive or negative ground). The reason for labeling the ground as Positive or Negative has more to do with how the circuit is wired up, than the actual voltage source. The explanation for that is beyond the scope of this answer.


Will setting a Lead Acid Car Battery directly on the ground without an Insulator like a piece of wood cause it to drain voltage?

No. Setting any kind of battery on the ground has no effect on its electrical characteristics. Electrical energy is drawn from a battery only by things that are connected between the battery's positive and negative terminals. Think of this, new batteries are kept on metal shelves. Steel is a better conductor than concrete. So if you could "drain" a battery by setting it on something, a steel shelf would be more efficient.


What would cause a battery to die in a 1987 supra after it sits for a few days?

check to see if your battery connections are correct. if you have a bad ground cable it could drain any battery quickly


Where would I attach the negative ground cable in a car if I need to use the battery charger?

The negative lead of the battery charger can be connected to either the battery negative terminal/post, the alternator case, or a known good engine or chassis ground. Note, if the lead is placed on a painted surface, high resistance will occur and the system will not charge.


Can electric seat belt drain car battery?

Yes, if the relay was stuck it would drain the battery.


What ground wire would make a battery spark?

Any wire or other metal object which touches the positive (+) connection of the battery AND the negative (-) battery connection OR the metal bodywork will spark


How do you jump start a 2000 intrepid?

there is a small box where the battery would be that you hook the positive to and you can just hook the negative to anything that would ground it


Why would a 1998 bonnneville not start the battery is new the starter is only a year old?

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Why would ac turn on by itself and not shut off until you undo negative battery terminal?

A short to ground somewhere in the electrical system.


Why would battery drain after motorcycle is started?

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Is Toyota Tercel 1983 Battery Neg or Pos ground?

I owned a 1984 Toyota Trecel and it was a Negative Ground system. This means that the battery's negative terminal had a ground strap attached from the negative terminal to the car's metal frame. I've owned two 1975 Toyota celicas made for the United States and the batteries were also negative grounded. You would probably have to go back to the late 20s and 30s in the United States to find a positive grounded battery system. Old Ford Model A cars and trucks in the twenties for example were positive grounded battery systems.


Is the frame of the vehicle normally attached to the positive battery post?

No. That would short out and potentially cause a fire. The negative side will go to the frame or the body to ground.