Shortening the length of the wire harness is a common requirement to improve product life and manufacturing efficiency. The weight of traditional car wiring harnesses accounts for about 5% of the entire vehicle. The shortening of the length can free up more physical space for car design, and can reduce the total weight of the car, thereby reducing fuel consumption and improving battery life. At the same time, there are various types of wire harnesses, complex layout and soft texture, so the production and installation of wire harnesses mainly rely on labor. According to data from Zosi Automotive Research Institute, 95% of wiring harnesses require manual production, and the low-automation production mode of wiring harnesses limits the further expansion of production capacity by car manufacturers. In response to this problem, Model 3 shortens the length of the wiring harness through an innovative architecture, reducing its blockage to productivity improvement.