I bought this by mistake. Only opened. Body only. Compatible with Nissan models. One side male, one side female, relay connector for power & speaker extraction. A convenient relay connector for obtaining power when installing drive recorders, ETC, LEDs, monitors, etc. A convenient extraction cable for adding subwoofers, tweeters, and other speakers. Because it does not use electro-taps, it connects between the vehicle's wiring and the car navigation system without damaging the vehicle's cables, and power can be easily extracted with a coupler-on connection. There are no blank (empty) pins, so there are no wires that will be disconnected by connecting this product. Product size Total length: Approximately 145mm (including terminals) Extraction wiring: Approximately 60mm from the split Extraction wiring Orange: Illumination female crimp terminal Yellow: Backup power female crimp terminal Red: Accessory power female crimp terminal ・Front speaker L/R ・Rear speaker L/R Coupler housing male side → Connect to car navigation 20P Coupler housing female side → Connect to vehicle side 20P