I just finished installing a Viofo A229 PRO 3 channel. I used this to hook up the power source to the camera. https://a.co/d/2btX4GR
The OBD2 connector has a switch that leaves power on for about 20 minutes after parking or always on until low voltage is sensed. I don't think it actually activates the built-in parking mode though, haven't tested it out to be sure.
The OBD2 connector has a switch that leaves power on for about 20 minutes after parking or always on until low voltage is sensed. I don't think it actually activates the built-in parking mode though, haven't tested it out to be sure.