Hi all happy new year!Looking at tweaking the sound system and noticed that the rear passenger side has two speaker cut outs. The driver side rear speakers has two speakers installed. I want to add another speaker with low end punch to the passenger side that is empty.

Where is the wiring harness that would allow a plug in and what speaker would you all recommend? I want a litte more bass punch, am happy with the mids and highs.I'm thinking that the originals are all Bose, two fronts(at the door panels) two at the rear door panels and the three at the rear deck. Found a place for a factory CD and would like to add this bass speaker!

Thanks to all for your replies and help. Leon H.