Ford 2003 Mustang Workshop Manual page 1811

59. Install the knock sensor wiring harness.
1. LH knock sensor electrical connector
2. RH knock sensor electrical connector
3. Engine control sensor electrical connector
4. Fuel injector electrical connector
5. A/C compressor electrical connector
6. CKP sensor electrical connector
60. Install the lower intake manifold.
Position the gaskets.
Install the intake manifold and tighten the bolts in the sequence shown.
61. Install the generator.