Steering wheel control wire

I am installing a ASWI-PS which interfaces between my 2007 double cab steering wheel controls and my aftermarket stereo. Does anyone know which wire controls the steering wheel controls. I want to regain this option as I have lost the controls with the installation of my after market stereo. Thanks in advance..

 

there are three wires in the smallest harness. they are in pin 6,7 and 8 of the harness. In my case, I had to put pin 6 to ground, put 7 to the control on the after market adapter, and I ran pin 8 through a 150ohm resistor and also onto the control on the adapter. It was easy to set up and it comes with simple instructions. You'll need a soldering iron and some heat shrink though, for the resistor at least, if not your whole setup, Crimping is for losers.