I successfully mounted my Valentine One radar detector to the top of the front windshield near the mirror, and ran the wires under the front headliner, down the A pillar side curtain airbag inner wiring channel, and connected to the fuse box in the passenger kick panel. My June, 2020 Model S does not have any metallic coating on the front windshield. Works great, turning on and off with the car, and has an excellent view of front, rear and side radar sources. Gathering the preliminary information was difficult for me, and I can post more detailed information if anyone wants to install any 12V accessory high on the windshield while safely hiding wires. Install at your own risk.