Blind Spot Monoriting

can anyone tell me if the bsm will work on my 2008 cx-9 it is pre wired. at least the wires are there i just don't know if i where to just get the bsm switch if it would work?
 
bsm switch? The BSM is an integrated system, including the radar sensors on each side, the turn signal and audible alarm interface, and the outside mirrors with the warning displays. It isn't a little gadget you can just plug in
 
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