Well they should have connectors on them, if they dont then i would advise you get a mechanic to do them since you seem unfarmiliar with the process. If they do have connectors on them (they most likely do, or there would be no way to connect them) then just connect them this way: Put on the negative and screw it down, then put on the positive and do the same. Its not going to shock you if you only touch on of the connectors at a time. Also make sure, not to touch the car (like leaning on it) while you are touching the positive (red) connector or you could get shocked.
once a battery is connected even if the key is not in the ignition, there is always power at certain points in your car. Connecting a battery backwards will not start your car, but it can and will fry the wires to your starter.
At the battery if at all possible.
Sure, just use 2 of the wires and ignore the 3rd one.
You connect the positive terminal first.
i will tell you how if you tell me what this project is called,it uses light bulb, copper wires,holder,6 volt battery.
Connect the negative cable first.
open
Certainly, a loose wire on the car battery can cause the car not to start.
The two wires which connect the timer switch on a Century 87423 battery charger are the red and black wires. The red goes to the positive connector while the black goes to the negative connector.
To wire up a car horn with a button you first need to run one of the wires from the horn to the battery. Take 1of the wires from the horn and run it to where you want the button to go. Connect the wire to the button and that's it.
start your own car like it was a regular old day. while the car is still on disconnect the car battery and remove it, get a pair of jumper cables connect them each end to the battery wires (positive to positive and negative to negative). get your hydraulic battery you gotta put it on something other then the ground. connect the other end of the jumper cables to the battery and charge its that easy. if you don't get how i just explained it sorry.
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.