Wing Root Electrical/Pitot/Static/AOA Connections (5)

 5 hours

Some of the last electrical stuff left is the wires to each wing for the lights.  There are six wires total that go to each wing.  I wanted some kind of connector that I could attach to the side of the fuselage that would allow me to connect all the wing wiring in a tidy and removable way.  I looked all over for a 6-pin panel mount Molex connector of some kind, but never really found what I was picturing.  Finally I found these AMP CPC connectors at SteinAir.  It's just a plastic cannon plug, and they sell panel mounted 7-pin kits.  Perfect!

https://www.steinair.com/product/7-position-bulkhead-cpc-connector-kit-series-1/

Anyway I bought one of those kits for each side, along with the appropriate pins.  I also ordered some panel-mounted quick release connections and 90-degree fittings for the pitot and AOA lines which I will run to the right wing.

I did some measuring on the wing to figure out where my wires and pneumatic lines should meet the fuselage, relative to the wing spar tunnel.  Then I drilled the holes and mounted the CPC connector and two pneumatic connectors on the right side of the fuselage.  The left side was the same, except just the electrical connector only.

I had to be careful with the pneumatic lines to make sure they wouldn't block the wing attach pin from being installed and removed later.

I also ordered a static port kit from SteinAir while I was at it.  I didn't realize when I ordered it, but the kit came with a pair of ports.  Also, they are tiny!  I decided since I now had two ports I might as well use both, so I mounted each one at symmetrical locations on each side of the fuselage.

Here's the right side port from the inside:

And from the outside.  It's barely larger than a rivet!

I chose that location because it was out of the way, seemed like it would be exposed to fairly undisturbed airflow, and it made for a short and convenient run to the Garmin GSU 25C ADAHRS that's already on the right side.  The farthest aft port on the GSU is static, and you can see here how I ran a short line to a T-fitting, then connected the right side port, and then I ran another line from the left port to the other side of the T.  I just tied the pneumatic lines to the existing wiring bundle.

Here's one more view of most of the static line:

The other two ports on the GSU are Pitot and AOA.  I ran those lines up and back, following the existing wires again, and then down to the fittings on the side that will go to the wing.

Labeled so I don't mix them up later!

Next came the wires to my cool new CPC connectors.  I used 18awg for the landing lights, with power running from the switch, to a butt connector, and then two wires from the butt connector (one to each CPC).  Same thing with the ground, except starting at the ground block on the firewall.

The wingtip lights got all 22awg wires, one power wire each from the nav/position lights switch and the strobe switch, and then each split into two to feed each side.  One ground wire from the firewall, then split to each side.  Finally, a strobe sync wire, which I just connected from one CPC to the other.

Of course, somehow I ordered like two too few of one of the pins, so it's just about done but I'll have to crimp the last couple pins on later.  Done for now!