Center Tunnel
Hi-
I am building a 9A, and I ran my wires down the center tunnel. I added two conduits and pulled a strong fish wire though each. Then I made up large bundles that included wires for; servos, nav lights, stall warning, fuel level sendor, headset and mic jacks, PTT, ELT, pitot heat, OAT probe, fuel pump, landing lights and a pair of extra wires in case I forgot something. That was split between the two conduits and pulled from behind the panel, through the center tunnel, through two holes cut in the center of the spare and then routed to the wings and aft of the plane. When it is done, all the wire will be out of site and secured away from any controls. Lots of work, but I didn't want visible wire runs.