> Just run another wire through the new pathway That's likely a big part of the problem. Fishing a new wire is generally very difficult, and there are probably

> Just run another wire through the new pathway That's likely a big part of the problem. Fishing a new wire is generally very difficult, and there are probably rules that say it has to be secured every X meters. Airplanes generally don't use much conduit, so I suspect they'd have to at least partially tear apart the plane to do this right.