Where are you getting the signal from? I have a 2016 JKUOM with the 430 and base speakers. Adding Kicker 77-10 front and soundbar. Adding the Powered Sub today. Are you tapping into speaker wire from sound bar for signal, if so where is the wire located? Or is there a left, right input into back of radio? Not a huge Audiophile but a pretty competent mechanic. What is the best way to do so? Thanks for all the help.