I bought the battery operated with remote control ferrari f430. My battery died. I received a new battery from the manufacturer and when I went to switch them out, the wires are welded to the existing battery. Where can I get new wires to connect to the battery and the car??

Hi, easy operation but first if the car is fairly new, call the company and ask their advise, cutting wires will probably void the warranty.
1.cut the wires and strip between the old battery and the car.
2. strip and connect the new battery by twisting together and securing with wire nuts available at any hardware store on the planet, like these

3. test the car, if it doesnt work correctly or at all, the + and - are probably reversed, switch and try again.
4. its a good idea to reenforce the wire nuts with duct or electrical tape after they are tightened.
good luck!