I also installed electric door locks (keyless entry) and they have been on there for more than a year and still work perfect.
I also had to drill for the wires, and used short sections of clear plastic hose sealed to the door at one end and the body at the other.
The actuators got installed parallel with the release rod between the door inner shell and the glass.
I like the fact that I can push down the drivers door lock and the passenger side also locks, or unlocks along with it.
