Are dashcams compatible with heavy duty J19 vehicles? Yes, but they require a special J19 cable for the dashcam to connect to the vehicle. Please contact Zubie Support if you have any questions on how to purchase the heavy duty J19 cable. Related articles What is the max size SD card that will work on my Zubie Dashcam? Zubie Dashcam Installation Zubie : Dashcam Distraction Detection Fleet Trip Export Setting up Places & Geofences