Routing of wing wiring

[Tomfox]

I have two sets of wires coming off of the wing - LED landing lights and strobes. Each of these bundles can be threaded through the stringers. Any thoughts on this approach?

Thanks

Tom

[War Eagle]

I ran mine down through the rear spar to make it easy to get into the cabin and in the case of folding the wings then I wouldn't have to unhook any wiring.

I also put the wires in a flexible conduit to protect from chaffing.

[jiott]

I ran my wing wiring (and pitot tubing) thru the rear spars and prefer this method because:

• It was easy to do.
• Enters the cabin at precisely the right spot to minimize flex and pinching during wing folding.
• Very simple for future repairs or inspection by pulling the wires out of the spar.
• No problem of the wiring getting in the way of rib stitching.

I also did like war eagle and put the wiring inside of lightweight flex conduit to protect against chafing on edges and rivets.

[Floog]

Just curious, Jim. How did you exit the spar with the pitot tubing? Did you fly today? It was great wx...

[jiott]

It exited out the spar near the aft side, no problem, plenty of room. Since I have an AOA system there were actually two pitot tubes. The photo shows it, but the pitot tubing is kind of hard to see under the wiring.

No I didn't fly today but wished I could have. Had obligations.

[Tomfox]

Good information and thanks. I followed your advice and used 1/2" drip tubing down the rear spar.

Thanks for the help

Tom

[Floog]

So, Jim, you ran the pitot tubing all the way out the wingtip end of the rear spar then back midspan to the pitot tube? That's what I was wondering to begin with....

[jiott]

Yes that is what I did. Seems like a long run, but that's what the book says to do and that is the way the factory does it. Seems to work just fine.

[War Eagle]

I also installed and AOA pitot and ran my tubes out the end of the wing to enter the rear spar then into the cabin.

Here is a picture of the work in progress.