The two black sensors on the nose and tail are part of the AN/ALR-69, Radar Warning System.
Per the 1A-10C-34-1-1:
The AN/ALR-69(V) radar warning receiver systems provide the capability to detect radar missile activity and missile launch conditions, and provide the following functions: search radar, emitter audio handoff, symbol separation for ID, emitter relative bearing, altitude prioritization, reduction,multiple ID databases.
The AN/AAR-47, Missile Warning System consists of four optical sensors, two in the tail and one on etch wingtip.
Per the 1A-10C-34-1-1:
The AN/AAR-47 MWS is an Electronic
Combat (EC) system that provides missile warning (MW) of surface-to-air and air-to-air missiles, as well as Laser Warning (LW) when the aircraft is being illuminated by a laser system. The AAR-47 is designed to detect an incoming missile and automatically provide an audio and visual sector-warning message via the ALQ-213 CMSP/CMSC indicators.