The only remaining wire going to the aft fuselage where those of the strobes. I run the two wires in the central tunnel and then the route to the wings via small holes under the seats. The holes will also allow the routing of some other wires : terminals strips below the sticks, taxi light and nav lights.
I have no more wire to run to the aft fuselage, there are six wires to run from the bulkhead behind the seats and fifteen wires through the main bulkhead.