Made holes on the 1-5 ribs to run the wires, and the Pitot lines. I wish I had done the same for the right wing. Feel the wires are better secure this way, and don't have to run them bet the ribs,a nd use sleves to protect them. Made a plate to get the wires, and lines throough rib 5 to avoid making holes on the small rib. I'm planing on usind the Save Aire kit, to simplify things.