I spent a lot of time researching connectors for the wing roots. I know some people try to avoid connectors here, particularly in the CANBUS, but I really want to be able to close up and finish the wings with all the wiring in place because the first time they are mated to the fuselage and remainder of the wiring harness is likely to be in a hangar, and I just don't want to deal with it them. So I've been thinking CPC connectors for the data and molex for higher power stuff. I had purchased the molex stuff a few weeks ago, but was holding off on the CPC because I just really didn't get it and the sites that sell it (Mouser, Digikey, etc) are overwhelming. I saw what ACS and Stein were selling, but it didn't seem to be the sizes that I wanted and based on my limited understanding of the TE Connector Catalog, I thought I could do better.
After hours of research and cross-referencing part numbers on Mouser, I finally had what I thought I wanted. But it used Class 1 pins which are different than the d-sub pins used in Class 2 connections. When I tallied everything up with those pins, it was very expensive - much more than just buying a larger connector from Stein or ACS. So, I ended up just buying a 28 pin Class 2 CPC connector from ACS, even though I only need about 20 pins.
Also had been doing some reading on OAT probes. I originally planned to put it in the back of the tail, below the horizontal stabilizer, but now I think in the left wing is better. I went ahead and ordered the Davtron probe with the Garmin GAD 13 to connect it to the CANBUS. The Davtonr/GAD13 combo was quite a bit cheaper than buying the GTP59 they specifically suggest for a G3X install. The GAD13 documentation talks about G5 installations, but I'm pretty sure it will work with a G3X - VAF seems to think so too.
Purchases: ACS - CPC connectors, Stein - OAT Probe, Molex connectors and pins, D-sub pins