This seems to be the common upgrade for the CX-5 with the Bose system...OT but while we're here, did you replace the factory bose amp with that JL space saver one? I'm so tempted to do it because no-highs-no-lows-bose but I don't want to cut into the factory wiring (unlike my previous focus with a big ole' sub box in the trunk.)
https://www.crutchfield.com/p_109BASPROB/JBL-BassPro-Hub.html?tp=114
But no I haven't modified anything as in my twenties my friends and I all had crazy vehicle systems and quite a few of my friends won awards all over Chicagoland at car stereo contests, I'm talking like trucks with walls of subwoofers/amps inside.