Hi all first time on here and needing some honest help. I have a 2011 9-3 convertible and am trying to fit a pioneer android auto head unit . After reading a few forums dynamic sounds seemed to be the place to go for all the necessary wiring so spoke to them and bought ctksa01 complete fitting kit.as highlighted in the picture this lead is an amp pass through stalk adapter. I cannot see anywhere to plug this in and it also says it is for a Mazda Bose. I cannot understand why this is in my kit can anyone please help me. Here is the back of my basic stereo if that helps anyone to understand what System I have and what I need to do.any help would be much appreciated as that 1 wire has got the better of me. Thanks to your all nick.