I spent a couple of hours running wires in the left wing tonight. It wasn’t much work, but the experimenting/thinking/researching took time. I decided where to place the pitot tube, the pitot controller, and looked at a few different blogs to get some inspiration. Sadly, by the time I finished the wiring, I had already decided I’m going to rip it all out again and change a couple of things.
I ran the left hand wiring harnesses per the plans. There are three sets of holes in the ribs, two are big enough for my pneumatic hoses for the pitot and AOA, one per hole. That leaves just one set of holes for all the wiring. This might be ok if you are just installing the regular wiring harnesses, but I’m planning to run some twisted pair wire for the pitot heater, plus several spare wires, and there’s no way that will all fit in the relatively small sized holes. I found a Vans article that describes options, and I decided to step out the wiring holes to half inch, which should solve the problem.
For reference, here’s the Van’s doc:
Wing Wiring: Routing Wires in the Wings