Well I have an Auto 08, but for my aftermarket fogs and subs I drilled a hole through the wall in a safe spot on the drivers side Probably about six inches up. Than connected the wires to a metal rod and put the metal rod through the hole to make it easy to get the wires through.
Dunno if it will help since you have a manual, but I tried.
Oh where I drilled through there wasa plastic capwhich is what I drilled through, it is about an inch and a half in diameter. I didnt actually drill through the whole wall. Just a random plasctic cap.