1,Applicable Model: The speaker activation wire harness is a replacement for Tesla Model 3 2019‑2020, please check the model and year before ordering. 2,Activate Speakers: The original car can only use 8 speakers. With this wire harness, you can activate the 6 inactive speakers on (only 4 in post March 2020 build) cars. 3,High Performance: Designed with stable data transmission and lossless sound quality cable to give you a better listening experience, pleasure of being surrounded by music. 4,Fine Workmanship: The upgraded wiring harness does not require additional processing, the wire is thicker, the resistance is smaller, the sound effect is improved. 5,Non Destructive Installation: Designed according to the original car interface, and can be inserted directly into the interface. Installation is simple and without any damage. Item Type: Speaker Activation Wire Harness Material: ABS Fitment: Replacement for Tesla Model 3 2019‑2020 1 x Screw Spanner 1 x Disassembly Wrench 1 x Speaker Activation Wire Harness Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.