The plus is Positive + and it connects to the Red cable which connects to the starter.
You connect the positive terminal first.
Connect the negative cable first.
When jump-starting a car battery, you should connect the positive terminal first.
When a car battery in connected to itself (i.e. You connect jumper cables onto a battery and then connect the other two connectors to each other), you create a continual circuit with the battery and nothing else. A similar effect is when you hold a 9 Volt battery to your tongue and you feel a small but continual "zap". Imagine this effect, but much greater. Sparks will appear when the connectors are first connected. Warning: Do not do this. This will damage your car battery. The only reason you should connect a car battery through jumper cables is to connect it to another car's battery in order to "jump" a car.
Disconnect the negative cable first when disconnecting a car battery
When jump-starting a car, you should connect the red jumper cable to the positive terminal of the dead battery first.
Disconnect negative cable first from old battery and connect it last when installing new battery.
Connect the Positive + battery cable to the positive + battery post first. Then connect the Negative - cable to the negative - battery post.
No, you connect the to an amplifier.
Sure, connect it to the car with jumper cables.
Connect positive first, negative last.
it will arch out and melt the knobs on your battery and your cables