This second one is PCM connector Is at the right rear of the engine compartment, mounted thru firewall. Heres the removal process. OUTPUT SHAFT SPEED (OSS) SENSOR Removal and Installation 1. Disconnect the battery ground cable. For additional information, refer to BATTERY, MOUNTING AND CABLES . 2. Disconnect the output shaft speed (OSS) sensor connector. Fig. 217: Disconnecting Output Shaft Speed Sensor Connector Courtesy of FORD MOTOR CO. 3. Remove the output shaft speed (OSS) sensor cover. 1. Remove the connector. 2. Remove the bolt. 3. Remove the cover. Fig. 218: Removing Output Shaft Speed Sensor Cover Courtesy of FORD MOTOR CO. 4. Remove the output shaft speed (OSS) sensor. Fig. 219: Removing Output Shaft Speed Sensor Courtesy of FORD MOTOR CO. NOTE: Lubricate the OSS O-ring before installing the sensor.