Hi folks, I'm trying to wire up a SWI-PS to control my D3 in a 2010 Mitsubishi Lancer Evolution with the optional RF Stereo. I've got the D3 wired up and working but I can't figure out which is the control wire.

 

I looked up on the pac-audio site, and they only had the 2008 lancer (this for reference), which apparently has a different harness, because the pins they say to tap to control is illumination on the harness, and nothing leading to the ground.

 

Any ideas/installer info?

 

Thanks in advance!