I just bought a 2016 prime. I luv it. The sound system isn’t bad but definitely not great. I would like to add an underrated subwoofer just a cheapie. eBay has a 480 watt for like fifty. Just something to give it a little more mmmf. My question is I read on another forum that their is a plug for stock subwoofer under drivers seat. Exactly where? Anyone got a pic. Also if I do find the plug can I just plug any powered subwoofer? Thanks for any help. New to the smart world. Please held need mmmf.