I just finished up these connections this past weekend. I used 9-pin connectors that I bought from B&C with insertable pins. I prefer gold-plated pins that you crimp on to the wires over the soldered type of connectors. For me, they are easier to install with a higher degree of quality. Those solder pins are very small and I guess my eye sight isn't what it used to be. I stripped off twice the length I needed and then doubled the wire back over itself before inserting it into the pin and crimping it. Gave it a mighty tug and it was tight and strong. Because there is room back there, I went ahead and used the plastic shells around the connectors to provide strain relief for the wires. I will use silicone tape to wrap the connectors once they are installed to make them water-proof and then I'll tie wrap them down to the rear deck to hold them securely.
I'll offer you a little advice from someone who has wired multiple airplanes. Don't scrimp on electrical tools, connectors, wire, etc. Nothing will ruin the joy of your new airplane more than electrical gremlins. Just a single ground wire that makes intermittent contact can drive you nuts. You'll pull your hair out trying to track down problems and often times, you'll have no idea where to start. The best advice I can offer is to treat every connection with extreme care. Buy good crimping tools for pins, BNC connectors, and ring terminals. Use high quality connectors, switches, and heat shrink tubing as well. You will curse yourself later if you don't. We know this, because we've all been there before.
Rosie