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Always the negative.

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Q: When hooking up battery which cable first?
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When hooking up a battery to a car battery to jump start it which cable should one attach first?

1. connect red booster cable to weak battery POSITIVE post. 2. connect red cable to POSITIVE post on booster battery. 3.connect black cable to booster battery NEGATIVE post. 4.make final connection on engine block of stalled vehicle away from the battery. STAND BACK,start vehicle and remove cables in reverse order of connection by disconnecting engine block connection first.


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Have you tried hooking a battery charger up , or getting a battery boost from another vehicle or battery jumpstarter pack ? Are your battery cable connections clean and tight ?


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Connect the Positive + battery cable to the positive + battery post first. Then connect the Negative - cable to the negative - battery post.


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For hooking up a computer you need a power cable and the cable for the monitor. You can also use cables for input devices such as the mouse and keyboard but technically they can also be wireless.


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Why won't the jumpers cables start your car when there placed right?

If they are hooked up right and the motor won't turn over, you could have a bad battery cable in the car you are trying to start. Try hooking the negative jumper directly to the motor block, if it starts then, you have a bad ground cable. If not, try hooking the positive jumper to the terminal on the starter.


How do you stop a fuse from blowing when you hook up the battery?

While hooking up a battery make sure to connect the positive cable first, then the ground. If you have been doing it that way and you have a fuse that keeps blowing you have a problem in the circuitry after the fuse. Some short in the wiring or problem with a device is causing the fuse to blow ( thankfully ) rather than destroy something else or completely drain your battery.


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How do you charge a 24 volt lorry battery?

The same way you charge any battery, by hooking it up to an appropriate charger.


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Hooking the battery cables up incorrectly. Reversing the polarity can cause the battery to explode.