2012 Prius Two steering wheel trip/display functions w/ aftermarket HU

I've installed a new headunit (thanks to the great guide here) and new speakers into my 2012 Prius Two. As I've replaced the stock HU, the steering wheel controls have been nixed as I expected but it doesn't kill me, I didn't use the steering wheel audio controls much to begin with. What I did use a lot was the trip computer and the eco monitors on the MID. From what I've seen on Metra's site, the ASWC will work with the 202 Prius, but it only mentions audio functions and climate control, nothing about the MID functions. I've seen a few 2010/11 installs but not much on whether the MID functions continue to work with an ASWC or PAC interface. Anyone have any insight into this, or a guide on how to get them to work or what to buy for it? Any help would be appreciated.

 

That's what I figured. When I took in the car for it's first maintenance appointment the technicians threw a fit about not being able to change the trip setting to tripA so they could reset the maintenance record. I wonder if you could just remove the mainboard of the factory headunit and connect the controls to that instead along with an aftermarket stereo. I'll give that a try when I put the aftermarket back in.

 

I checked those threads and the 2012 only has one 20 pin connector that I saw. I installed the aftermarket HU again today and while doing that I played with using the stock HU with different combinations of harnesses plugged in. The controls work with a 28 pin connector plugged even if no other harnesses are plugged in. I haven't installed a SWI yet and don't intend to if I can just get the right side controls working.

 

That would be perfect, ajtozzi. I'm not very interested in the audio controls but I would like the right side controls to continue working. If you could tell me which pin to ground and how you did it that would be great.