Hi Daniel
The only electrical connection is the under handle LED on the outside door handle. The door handle has a Bowden cable that connects it to the actuator, the actuator has electrical connections to communicate with the cars control system
the actuator is bolted inside the door, the inside door handle is also connected to the actuator by a second Bowden cable
To work on it you will have to take off the inner door card then carefully peel away the water membrane. Once the actuator is exposed you can get your hand behind it and unhook the Bowden cable then remove the outer handle and unhook the other end of the cable. Fitting the new cable is obviously the reverse
Dave