Alternator Replacement Make sure you have the anti-theft code for the radio and the navigation system, then write down the frequencies for the radio's preset buttons Disconnect the negative cable from the battery first, then disconnect the positive cable. Remove the alternator-compressor belt. Disconnect the alternator 4P connector (A) and BLK wire (B) from the alternator Remove the mounting bolt (A) and alternator bracket mounting bolt (B), then remove the harness clamp (C) from the alternator bracket. Install in the reverse order of removal. Enter the anti-theft code for the radio and the navigation system, then enter the customer's radio station presets. Reset the clock. Perform the powertrain control module (PCM) idle learn procedure , and the power window control unit reset procedure ('03 model). Set the clock.