Modern vehicles are controlled by the network of the vehicle, which we call Canbus. When we need to do any modification of the vehicles, the vehicle system would detect and raise an alarm. Thus, a Canbus driver may be necessary to avoid warning error codes. Some lighting manufacturers would sell the light bulb separately with the canbus drivers, which would be a trouble for customers. But, you can find here that Auxbeam headlight bulb would include this for your convenience.
For headlight bulbs, installation is quite easy than the light bars. Just unplug the old headlight bulb, plug in the new one, and turn in on, done!