Installing your Comma 3X

When installing a Comma unit in a Bolt, follow the Comma website's guide, but disregard the optional step for the Comma Power (OBD-II power). The Bolt's camera harness provides sufficient power, fulfilling the benefits listed for Comma Power. To preserve your car's 12V battery, the Comma unit will automatically shut off after 6 hours in the off road state.

Note

If you are installing a pedal, complete the next step of the guide before closing up the camera/harness area.

Install Video

Things have changed a lot over the years, especially with the variations between cars, so there are plans to make an updated install video at some point.

This video from Transport Evolved is quite good and walks through the process on a 2017 Bolt. If you are not installing a pedal, you can ignore the steps involving an ethernet cable. Also - the software/fork landscape has changed greatly since 2023, so refer to the software section of this documentation for more info about that.

The Stupid White Clip

There is a tiny white clip on the connector to the camera that you have to pull back in order to add the harness. It is a pain in the ass to deal with. Some suggestions include using an eyeglass screwdriver, or a metal credit card (that you don't care about damaging).