The lower left dark blue wire on that harness is the wire used to splice into an axis steering wheel controller. You have to make sure you don't use a butt connector to connect them though. What I did was remove some insulation wire and then a pick tool to get the wires to seperate and then twist together. In order to get the bose amp to work with an aftermarket unit its the second harness on your right and its the pink wire that needs to be connected to the remote turn on lead which is blue and connected the same way. Hope. This helps you. Typed on my S3
