I'm still fiddling around with various wingtip connectors for the APRS transmitter in the right wingtip. I decided to install a set of polarized Anderson PowerPole connectors. They should work fine, after I secure the two halves of the connector together with a a small zip-tie.
I also cleaned up the wiring on the end of the tip rib, moving the higher-current power feed for the nav/strobe lights up and away from where the APRS J-pole antenna will run. Several tie-wrap bases were replaced with better ones, and all wires got protected with silicone tape where they are tie-wrapped.