Fishing wire into doors for electronic locks

[davepl]

The locks on these trucks being annoying (key only, can't push button in and hold when closing, etc) I wanted to add an alarm that supports keyless doors. That's easy.

The hard part is getting the wires to the lock actuators. It's not like I have power windows and other wires I can run alongside... it's the first wire.

So I'm faced with:

a) Where to drill the holes that gives me access on both sides
b) How to drill them with the doors still on (not removing them)
c) What to use for a grommet or flex piece to cover the wiring once in there

I'm sure any basic stereo shop could bust it out easily, but I'd like to continue the theme of doing everything myself.

I've thought carefully about whether I want to do this, and I'm definitely doing the alarm, so I might as well. Like I said, I won't go to the lengths of pulling the doors, but you can often do it from inside the door with the door panel off, drilling right through door and cab at the same time, and then they line up. But I'd like to talk to someone who's done it successfully before!

Thanks in advance if that's you!