Wiring Harness Placement

After careful study of the wiring harness, I think I generally understand how it should be positioned. All of the connectors and each of the individual wires have labels that match the names of the LRU connectors and appear in the schematic wiring diagrams that came with it all. Sweet!

The harness has a central “gooseneck” from which various connector bundles extend. The several sub-harness bundles have been made to reach corresponding LRUs where they are mounted behind the panel. Other portions of the harness extend to places in the center and rear fuselage to connect with lights and autopilot servos.

There are probably several ways that some of the harness extremities could be routed within the center fuselage (CF). Some routes are undoubtedly better than others. I’ve tried to find what I consider to be the most natural – and if you will – most elegant way to dress and eventually secure the wiring, while always considering guidance in FAA AC-43.13-2B.

So far, so good.

In the interest of keeping things both lightweight and tidy, I’ve opted to replace a heavier and bulkier firewall-mounted circuit breaker enclosure with a simple bracket. I also decided to locate the battery and pitot heat power C/Bs and the ammeter shunt on the LRU rack instead of inside the engine compartment.