I have late 2017 Model X with standard audio. Interested in seeing if it is possible to install a subwoofer somehow - I removed the cover panels over where the subwoofer lies on premium audio versions (rear right) to see the set-up. It appears there are prewired connectors and a space to fit a subwoofer - see attached picture. There are three wires, each with its own different connector type - but I don't know what function each is for. Do you guys think it is possible to install a subwoofer here and connect it to these connectors for a working aftermarket subwoofer? Additional thoughts?