Replace the wiring that was burnt.
Depends how many wires got fried. Could be a lot.
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.
Simple parts of a circuit are switches, light bulb, battery and connecting wires.
Obviously check the battery. Anyway, if the alternator, battery, and wires connecting them are good the voltage regulator is next on the list.
This is to avoid energy losses in the connecting wires.
Well the wiring was probably fried, but that is because the terminals were hooked to the wrong wires. Although when you hook a battery up backwards there are many sparks, i do not see how someone would not have noticed that it was hooked up wrong.
Yes, blown fuses, burnt wires, fried computers......
Closed circuits work, they have all the wires connecting from the battery, the switch and the lightbulb that is needed for the electrical current to flow through the battery through the closed switch into the light bulb and back into the battery. Therefore it works.
You may have blown fuses, burnt wires, or even "killed" a computer. You may need to tow it to a service shop. ANOTHER ANSWER Did it start at all after you put in the battery? It COULD be that you destroyed the diodes inside the alternator. If you don't have experience rebuilding an alternator, don't even bother to try to repair it, just get another. Connecting a battery backwards will almost ALWAYS destroy the alternator diodes. As for the computer, it's possible that you fried it as well as the radio and just about anything else that might have transistors or diodes built in. In short, take it to a qualified mechanic.
Connecting wires in electrical terms is called an electrical splice. All electrical splices have to be made in a junction box.
Cut the wires
no