Hi All A very specialist question for anyone who can help? I have bought an aftermarket headunit for my 2013 ST and wish to ultilize the factory fitted USB and AUX ports. My new headunit has rear USB and AUX and these are just cables so was hoping there may be a way of hard wiring into the original USB and AUX looms. My only issue is I have no idea which ones they will be. Can anyone help with the pin allocation from these wiring looms? If not does anyone have a good step by step guide to removing the arm rest so that i can run a new cable to the same point?