there is not a proper grounding wire mounted to the body of the car or truck.
The wire will heat up and melt and the battery may be damged.
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.
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
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.
Red wire=positive Black wire=negative
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.
Red to positive, black to negative