How do I hook up an amp to a stock infiniti G35?

To hook up an amp to a stock Infiniti G35, start by disconnecting the car battery to ensure safety. Then, run a power wire from the battery to the amp's positive terminal, and connect a ground wire from the amp to a solid metal point on the car's chassis. Use RCA cables to connect the amp to the factory head unit, which may require a line-out converter if the stock system lacks RCA outputs. Finally, connect the speaker wires from the amp to your speakers, and recheck all connections before reconnecting the battery and testing the system.