The harness is used for car audio, car navigation, common public car Android solutions that meet the pin definition of the standard, and the main power line interface is 16pin According to the standard design of the original vehicle, there is no need to cut any wires, and the plug to plug installation is simple The products have been tested and tested for electrification performance and other indicators For the harness with CANbus protocol box, you need to enter the factory settings of Android host and select the corresponding CANbus brand and model in the car bus configuration menu. It is recommended to update the latest MCU and configuration file when connecting WiFi to the Internet. It is also recommended to install under the guidance of professionals or experienced persons. Colour:As Shown Material:ABS List of compatible models:For Hummer H2 2004 CANbus box model:OD-HM-01 Package Contents: 1 set * Canbus Box Decoder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.