Supported device:This adapter harness is designed to work with any good quality OBD2 scanner / code reader, which can properly manage CANBUS data. You can select from a wide range of scan tools. such as handheld OBD2 scanner, PC based OBD2 scanner, Mini OBD2 interface via bluetooth & wifi connection Note: Adapter is wired according to OBD2 standard,your device must be supported for Tesla apps. Supported apps, free and paid (None included with this product) for an example: for Andriod -Scan My Tesla for iOS - tesLAX (fee may apply) Vehicle compatibility: For Tesla Model 3 / Y from 2019 and onwards for Tesla Model 3 & Y are equipped with wiring loom inside back end of center sonsole. you need remove protective hardcover to access it, plug our harness between connnectores to create J1939 socket for OBD2 device. Note: Earlier Model 3 had a harness connector slightly different shape from ours and it simply won't fit. Note: Installation guide not included, we strongly recommend you seek professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Photo Color Material:ABS Package Contents: 1 x 26pin to 16pin Adapter Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 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.