After looking at a few other builders logs I decided to install my landing and nav light wires in the stringers for the false ribs. Most people choose to install them inside the rear main spar with wrap over them. Its probably overkill but I wanted to keep the wires as far away from the magnetometer wire as possible and since that cable will have a large connector on the end it made since to put it in the spar. I installed several layers of shrink wrap on the entry and exit points of the wire from the stringers and then installed a a larger piece of shrinkwrap on the wire and over the stringer to keep the wire from sliding inside the stringer. I installed a 4 condustor shielded cable in each stringer, One for the landing light with wigwag, and one for the nav light with strobes.