• Audio System Architecture
• Video Display System
• DVD/CD Mechanism and Electronics
• Digital Signal Processing (DSP)
• Power Supply and Management
• Input/Output (I/O) Ports and Interfaces (e.g., USB, AUX, RCA)
• Bluetooth Module
• Radio Tuner (AM/FM)
• User Interface and Control Logic
• Internal Wiring Harnesses
• Firmware and Software Update Procedures
• Antenna Systems (Radio, GPS if applicable)