Help, Unknown Cables 2011 Tacoma

Hello, this is my first post and i had a question that I can not seem to find answers to on Google. I recently purchased a 2011 Tacoma TRD Prerunner and the previous owner stripped out whatever was connected in the rear seats and under the infotainment. Any ideas what was plugged in or what I can connect there? I am unable to contact the previous owner so that is why I am posting here. The rear right seats have two white one blue and a yellowish cable and the left rear side has two yellowish cables. Any suggestions to what they are for is appreciated.

 

looks like a factory jbl subwoofer/amp connection, but also looks like the entire jbl system was ripped out, as well as the child restraint mounting points, to allow for a larger subwoofer box to be installed.

 

Thank you for your reply! I checked online for that JBL subwoofer/amp and can confirm that it has those color coded connections. I found out that the other cable is the +/- terminals for a subspeaker and the empty port on the dash is the factory aux port the previous owner removed to install an aux/usb combo.