Over the last two weeks I started wiring the landing lights on both wings and plumbing the AoA pressure probes on the left wing. It was much easier to do this stuff before the leading edges go on the spars for good. The pressure probes were easy – just attach the 1/8″ flexible tubing to the barbs on each probe.

The landing light wiring was a little more complex. I upgraded the bulbs to 100w, and with the length of the wiring run from each light to the fuse block in the fuselage, I upgraded the wiring to 14 AWG. Given that the lights aren’t in an easily-inspectable area, I spent some extra time installing standoffs to make sure that the wires won’t flex or rub against anything that might cause shorts or breakage. The standoffs came from a local supply store, and per a recommendation from Bob Nuckolls of AeroElectric Connection fame, I used Shoe Goo to hold them in place. I’ll let you know in a few years if it holds up.

Here’s the left wing with LL wiring and AoA probe plumbing. Notice the local ground on the outboard rib; using the airframe as a ground path for large-current DC power consumers saves weight and space. There’s a little service loop on the LL wiring that will make it easier to replace the bulb at some point in the future.

Left wing wiring and plumbing

And here’s the right wing LL wiring.

Right wing wiring