Comma.ai plugs into the vehicle's "backing" CAN busses (Powertrain, Sensors, infotainment, etc.) behind the Gateway, not the OBD port. This requires the removal of at least a few trim pieces and connectors. For example, the Giraffe module taps in at the high-mounted camera module on many cars, requiring the removal of ceiling trim and the installation of a custom connector / tap onto the CAN bus.
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Comma.ai plugs into the vehicle's "backing" CAN busses (Powertrain, Sensors, infotainment, etc.) behind the Gateway, not the OBD port. This requires the removal of at least a few trim pieces and connectors. For example, the Giraffe module taps in at the high-mounted camera module on many cars, requiring the removal of ceiling trim and the installation of a custom connector / tap onto the CAN bus.