Fabricated rack fo rthe strobe pack and rivetted to the floor behind the aft baggage bulkhead. Since I envisioned a shortage of conduit space, I drilled out the forward (QB half installed) seat floor and drilled a conduit hole from the front and another in the aft bulkhead. I then routed a plastic conduit from under the seat pan back to the aft fuselage section near the strobe pack.