Truck-Specific 18-Pin Audio Harness This connector is used in small, medium, and large trucks manufactured since 2017. While 14-pin connectors were the mainstream previously, 18-pin connectors are now being used. This product is used when installing commercially available car audio equipment using the original wiring. ■ Connection: Vehicle-side audio harness connector ※ For 17 Super Great trucks with factory-installed navigation systems, there may be a 20-pin connector. Installation is not possible with a 20-pin connector. ※ Some 17 Super Great trucks (May 2017 and later) are not compatible. Installation is not possible with a connector (black, square) with a Mercedes-Benz mark on the radio side connector. ■ Notes ・Instruction manual is not included. ・Please be sure to check the shape of the connector on the actual vehicle before purchasing. ・Always check the power supply voltage (12V/24V). ・Use a DC/DC converter if necessary. ・When using a high-output amplifier, use a dedicated power cord for the amplifier's main power supply (yellow) and secure a separate power source. ・We are not responsible for any labor costs or compensation for any defects or damage to the vehicle caused by the installation of this product. I accidentally purchased this and am selling it at a low price!