there is not a proper grounding wire mounted to the body of the car or truck.
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
The negative battery terminal is on the battery. They don't have a wire coming from it like they do the positive. For charging purposes, the engine block acts as the battery ground. When disconnecting the negative at the battery, the negative terminal usually has a black wire and the positive has a red.
Leaving a wire connected to a battery for too long can create a short circuit, which can lead to overheating, damage to the battery, and potentially a fire hazard. It can also cause the wire to overheat and possibly melt or catch fire. It's important to disconnect the wire from the battery when not in use to prevent these risks.
Negative - (Black) is Ground, Positive + (Red) is Hot. Ground wire goes to Negative (Black) it goes from negative on battery to engine for ground.
run it and then disconnect the negative wire from the battery if alternator dies its bad.
The red battery wire goes on the positive + battery terminal no matter which side it is on. The black wire goes on the negative - terminal.
On the car battery, the positive wire is red and the negative wire is black. If the body of the car is metal or conducts electricity, then the body of the car serves as the negative wire. The metal in the engine serves as the negative wire.
Usually on the Negative terminal of the battery.
The red wire is Positive, (+) and the Black wire is Negative. (-)
Red, positive + cable to Positive + battery terminal. Black, negative - cable to Negative - battery terminal.
that would be the negative normally in most cars goes to ground on the engine block
Red to positive, black to negative