Hi, I’ve just realised after 4 years of owing the 2013 Awd GT bose cx5, that I don’t have the subwoofer in the spare wheel well and there is no wiring for it either despite the system being bose with bose amplifier under the dash and 7 speakers? Is it how they were in 2013 or am I missing something? Worked on many cx5 as a mechanic and always seen the sub inside the spare wheel but never bothered to check it on mine.