Well i just pulled 12 gauge into the rear doors and it was a snap. The pic below shows where i pulled the wire through the plug. Basically its right on top rather than through the small holes. The only problem with this way is that the rubber cover doesn't quite fit flush to the car. I haven't figured out how to remedy this yet, maybe seal it up with some silicone? I used Crankin Cable (I think that's what it's called) and it is some heavy duty s*** - makes Monster look like dental floss or something!