Ford 2003 Mustang Workshop Manual page 2005

7. Position the wiring harness aside.
Disconnect the LH fuel injector electrical connectors.
Separate the harness from the LH fuel supply manifold stud bolt.
8. Remove the fuel supply manifold.
Remove the four bolts.
Installation
1. NOTE: When the battery is disconnected and reconnected, some abnormal drive symptoms
may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven
16 km (10 mi) or more to relearn the strategy.
To install, reverse the removal procedure.