To connect your telematics, you will need to contact your TruckOnline representative so they can provide you with your Client ID (API Key) and your Client Secret (Private Key).
When making your request, make sure that the rights associated with the API key include at minimum Read access on Vehicles, as these are the rights that allow Dashdoc to automatically retrieve vehicle data.
Once you have this information, go to Dashdoc: Settings > Extensions > Telematics, select TruckOnline and enter your Client ID and Client Secret.