Setup
Getting started with your comma device
It’s easy to install! Follow the video guides or use the step-by-step walk through below.
If setting up in a Nissan or GM, see install locations here.
Installation Guide
Installation takes most users 30 minutes
Upgrade Guide
How to upgrade from comma two to comma three
Step 1
Remove the rearview mirror cover trim
Removal method varies by car. The durable plastic often requires a strong tug to pop it off on Hondas. Toyotas often need a slide outward. If you’d like to see how it’s done, find a comma installation guide for your specific make on YouTube.
Step 2
Plug your harness into the camera
Unplug the existing LKAS camera connector and plug it into the harness. Now, connect the other end of the harness back into the LKAS camera.
Step 3
Secure harness
Find where to place the harness box so the trim can still be installed over it. Peel off adhesive sticker and attach the harness in place.
Step 4
Plug the RJ45 Cable into the harness
Ensure the cable is fully seated.
Step 5
Route the RJ45 cable to the OBD-II port
The RJ45 cable must be brought across your car to your OBD-II port which is almost always found below the steering wheel to the left. Carefully run the cable behind the vehicle trim along the windshield, doorframe, or dash.
Step 6
Plug the comma power into the OBD-II port
Plug the RJ45 cable into the comma power and then plug the comma power into the OBD-II port.
Step 7
Plug the OBD-II cable into the harness
Ensure the cable is fully seated. For comma three, ensure the straight end is connected to the harness box.
Step 8
Reinstall the rearview mirror cover trim
Ensure the car harness fully fits inside the trim. Have the OBD-C cable come out of the top.
Step 9
Mounting prep
Clean the mounting area with the included alcohol wipe and let it dry.
Step 10
Place mount high and centered on the windshield
Ensure the top of the mount is fully visible from the driver's seat.
Step 11
Adhere mount
Peel off the 3M tape on the mount. Press firmly in the center of the mount, then the edges. Ensure no bubbles form.
Step 12
Let the mount cure
The mount must cure for 48 hours before installing the comma device. Skipping this step will compromise the integrity of the mount.
Step 13
Clean camera lenses (comma three only)
Clean all three lenses with the included microfiber cloth.
Step 14
Plug in OBD-C and mount the device
Plug the OBD-C cable into the back of the comma device. Make sure the cable is all the way in.
Step 15
Pair with comma connect
Pair your device and claim 3 free months of comma prime with connect.comma.ai on your mobile device.
Join the Community
Have a question or want to learn more? There are thousands of knowledgeable community members on the Discord!
Developer Resources
Check out the code behind the comma three. Review, fork, and contribute to the open source ecosystem.
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