How do you replace a 1986 Nissan truck antenna?

To replace the antenna on a 1986 Nissan truck, first, locate the antenna base, usually mounted on the fender or roof. Disconnect the old antenna by unscrewing the base and pulling out the cable from the radio. Install the new antenna by reversing the process: attach the cable to the radio, mount the antenna base securely, and ensure it is properly sealed to prevent water intrusion. Finally, test the radio reception to ensure the new antenna is functioning correctly.