This installation guides applies for 70-892 70-897 Tesla 3 & Tesla Y Switchback LED Sequential Turn Signal & Daytime Running Light Kit.
Before installation, we recommend you to test the product by connecting the small plastic connector to 12V +/- to activate the white LED fog/driving light feature and tapping the yellow wire to 12V + to enable the amber LED turn signal feature. Do NOT cut off the connector, as it will void the product's warranty.
Step 1: Remove the front wheel and open the entire wheelbase plastic cover to fully access the back of the OEM LED fog lamp.
Step 2: Remove the 3 screws and two fasteners holding the OEM lamp, unplug the power cord, and then remove the OEM lamp.
Step 3: Install the new switchback LED turn signal/driving/ DRL light kit in the same way, re-bolt the screw, and replace the fasteners.
Step 4: Consult the provided diagram for new wiring and plug setup. Reconnect the black connector to the stock harness without cutting (to avoid safety hazards and warranty voidance), then route the yellow wire to the existing headlamp's turn signal positive, splice, and tap it to enable the switchback/sequential blink feature of the LED turn signal.
Below we have also included a video, you can watch for how to install this product. (Credit goes to Tesla DIY)