On a computer controlled car, the computer needs the battery to for voltage regulation. With the battery unhooked, it may shut off. That is not an indication of an actual problem. The proper way to check the alternator is with a voltmeter.
The negative battery cable from the battery.
The battery cable that is grounded, is connected to the body of the vehicle. Sometimes it is the negative cable & sometimes it is the positive. You need to check which cable is connected to the body of the vehicle.
Depends on the vehicle, but normally it bolts to the engine. The negative is the ground cable.
To test the alternator on a 1993 Ford Bronco, you should remove the negative battery cable first. This helps prevent any electrical short circuits while you work on the vehicle. Once the negative cable is disconnected, you can safely test the alternator and its connections. Always ensure that the vehicle is turned off before performing this procedure.
No, that cable is connected to ground, so it cannot short out.
Something on the vehicle is on pulling power.
Negative.
To replace a mirror in a Toyota vehicle, first, the negative cable of the battery should be disconnected. Then, the mirror cover should be removed from the door panel carefully, and the wiring disconnected so the mirror can be replaced.
Safe practice directs that when connecting battery cables to the battery, the positive cable should beattached first, and then the negative cable last. In disconnecting battery cables, safe practice directs cable order in the reverse, I.E., the negative cable is disconnected first, and and the positive cable last. The reason for this safety procedure is that IF the ground cable is attached first, then when using a metallic wrench to tighten the positive cable clamp, and IF the wrench in contact with the positive terminal clamp were to come in contact with any grounded metal of the vehicle, then a tremendous short circuit would occur. A massive short circuit results in massive arcing [fireball] which can severely burn a person, damage the battery [or cause it to explode], damage the vehicle electrical system, or worse, cause the vehicle to catch on fire. Always connect the negative cable last, and disconnect the negative cable first!
There are typically two cables, one is usually red and the other black. The black cable attaches to the negative terminal on the battery and the red wire connects to the positive terminal on the battery. When removing the battery from the vehicle always remove the negative cable from the battery first. When installing the new battery always connect the negative cable to the battery last.
The negative battery lead cable is to be connected to the negative lead terminal on the battery.
This is a safety precaution. Disconnecting the ground cable protects you from accidental shocks, accidental engine starts (by someone unaware of your presence underneath, perhaps), in airbag equipped vehicles it prevents the airbag from deploying accidentally (expensive and/or injurious). Obviously, if the repairs in question require that battery power be available, you wouldn't disconnect it, but the protection it offers is well worth the extra minute it takes to disconnect the cable. As far as why the negative instead of the positive cable is disconnected, the reason is that if you are touching the positive cable and anywhere else on the vehicle, you'll get shocked. Not so, with the negative cable. Also, the negative cable seems less prone to sparking than the positive cable. If, however, you are working on a vehicle with positive ground (uncommon in North America), the positive (ground) cable is to be disconnected