Pioneer TS-WX1210AM 12” 1300 Max Power Ported Enclosure Active Subwoofer with Built-in Amplifier - Walmart.com
Just installed a Pioneer TS-WX300A, so far so good, couldn't get it connected to the radio so just tapped into the back speaker. All in all it was about 3/4 hour job
Amazon.com: 10pin Power Harness Plug RCA Compatible with Pioneer TS-WX1210A TS-WX1010A TS-WX300A TS-WX300TA 01.45-18200-A01, White : Electronics