Product Features: Speaker Output Extraction: This is a coupler harness for extracting speaker output from Mazda's genuine audio system. It supports front and rear speaker signals, providing a total of 4-channel speaker output. Ideal for adding subwoofers and amplifiers. Easy Connection with Coupler-on Design: The coupler-on design requires no modification of the original wiring, allowing for easy installation. High-Quality OFC (Oxygen-Free Copper) Wiring: Uses OFC (oxygen-free copper) wiring with tin plating. This achieves both high sound quality and durability. Compatible Models and Accessories: Compatible with CX-5 and CX-8 models from December 2020 onwards. Please be sure to check compatibility before purchasing. A wiring diagram is included for smooth installation. This text has been summarized by AI. Please be sure to check the product information before purchasing. Due to the reduced product price, it will generally be shipped in a waterproof vinyl bag and delivered by post, or the original box may be disassembled for shipping.