Abstract: With the rapid development of intelligent technology for fully mechanized mining faces in coal mines, the requirements for the intelligence of coal mining machines are becoming increasingly high. As an important part of coal mining production, the technical level of coal mining machines is directly related to the improvement of coal mining capacity. The electrical control system of the coal mining machine is a complex electrical system that involves the collaborative work of multiple electrical equipment and components to achieve various functions and controls of the coal mining machine. Ensuring good communication between various electrical components is an important indicator of the electronic control system. Communication cables are the “blood vessels” in the system, responsible for connecting various components and elements to achieve the transmission of electrical signals and the execution of control commands. A wiring harness refers to an electronic circuit component composed of various wires, connectors, protective covers, etc., which can transmit various information such as power, signals, commands, etc. inside and outside the system, and has the advantages of integration, regularity, and easy installation.