Ok mobile at the moment do I can't dig too far in but here's some quick results that look like they should work.
The job was simple enough if you're familiar with wiring. Match the functions of the harness that comes with the stereo with the adapter, crimp then together and bolt it all back together.
One thing to note is that there is no ground in the factory wiring. You will need to run one separately. I'd suggest hitting a bolt to the chassis nearby to minimize any ground loops.
I'm sure you can find a good write up over at the nextera forums if you get stuck.
Another note of caution. The two metal retaining clips in the bezel love to scratch the dash. Cover it with a cloth to save the surfaces.