Ford 2003 Mustang Workshop Manual page 4089

3. Connect the passenger air bag module electrical connector.
4. Install the right hand A/C register duct.
Connect the A/C duct at the air plenum.
Install the duct at the A/C register and install the two screws.
5. Close the glove compartment.
6. Remove the restraint system diagnostic tool from the clockspring electrical connector.
7. Connect the clockspring electrical connector at the base of the steering column.