The Geotab HRN-CT20T1 is a custom Geotab adapter made specifically for Tesla Model 3 vehicles (up to 2018). This adapter also requires a connection to the industry-leading Geotab GO9 telematics and vehicle tracking device.
Length: 30 cm / 12 inches
Max length of connected cables: 2 meters / 6.5 feet
Harness Identification and Application Guide
Geotab Telematics Harness Cheat Sheet