Ford 2003 Mustang Workshop Manual page 1962

8. Connect the fuel pressure sensor electrical connector and the vacuum hose.
9. NOTE: Make sure the locking clips are fully engaged into the bracket.
Reposition the accelerator cable and the speed control cable (if equipped) and install the cables
into the bracket.
10. Connect the hose.
11. Connect the IAC electrical connector and install the main chassis vacuum hose.