Chevy GMC Cadillac Factory Radio Add A Subwoofer Amplifier Plug & Play Harness


Want to add a subwoofer to your original stereo?

Don’t want or know how to cut into your wiring?


Take the wiring guess work out of the installation with this plug and play wire harness!  Installation is as easy as 1, 2, 3!
  1. Remove your OEM factory radio
  2. Unplug the OEM factory wiring and plug in this wire harness
  3. Reinstall your OEM factory radio
What is it?

This wire harness provides a connection for one set of RCA cables to provide an audio signal to an external amplifier, as well as an add-a-circuit with remote wire for the remote amplifier turn on wire.  This wire, along with a set of RCA cables, is run to your aftermarket amplifier.  All that’s left for you to do is connect the main power wire from your battery and ground.

What you will receive
  • One (1) plug and play wire harness
  • One (1) Add-A-Circuit fuse tap
  • One (1) 3 amp fuse
  • One (1) 15ft RCA Cable
  • One (1) 3ft RCA Cable
  • One (1) Bass knob
  • One (1) 4 AWG Gauge amp installation kit.

Compatibility Notes

  • It is up to the installer to select which circuit to use with the Add-A-Circuit.  The radio circuit is most common however any that turns on/off with the ignition could be used if deemed appropriate.
  • A variety of wire colors may be used for the remote wire coming off the harness.  Regardless of color, rest assured it is for the remote turn on of an amplifier.
Compatible with these models

MAKE MODEL From To
Buick Enclave 2013 2017
Buick Enclave 2008 2012
Buick Lucerne 2006 2011
Cadillac DTS 2006 2011
Cadillac Escalade, Escalade ESV, Escalade EXT  2012 2014
Cadillac Escalade, Escalade ESV, Escalade EXT 2007 2011
Cadillac SRX 2007 2009
Chevrolet Avalanche 2012 2013
Chevrolet Avalanche 2007 2011
Chevrolet Aveo  2009 2011
Chevrolet Aveo  2007 2008
Chevrolet Captiva Sport  2012 2015
Chevrolet Equinox 2007 2009
Chevrolet Express 2016 2019
Chevrolet Express  2013 2015
Chevrolet Express 2008 2012
Chevrolet Impala 2006 2013
Chevrolet Impala Limited 2014 2016
Chevrolet Monte Carlo 2006 2007
Chevrolet Silverado 2500HD, 3500HD, Chassis Cab  2014 2014
Chevrolet Silverado 2012 2013
Chevrolet Silverado 2007 2011
Chevrolet Suburban  2012 2014
Chevrolet Suburban 2007 2011
Chevrolet Tahoe 2012 2014
Chevrolet Tahoe 2007 2011
Chevrolet Traverse 2013 2017
Chevrolet Traverse 2009 2012
GMC Acadia 2013 2016
GMC Acadia 2007 2012
GMC Acadia Limited 2017 2017
GMC Savana 2016 2019
GMC Savana 2013 2015
GMC Savana 2008 2012
GMC Sierra 2500HD, 3500HD, Chassis Cab  2014 2014
GMC Sierra  2012 2013
GMC Sierra 2007 2011
GMC Yukon, Yukon XL 2012 2014
GMC Yukon, Yukon XL 2007 2011
GMC Yukon Denali, Yukon XL Denali 2012 2014
GMC Yukon Denali, Yukon XL Denali 2007 2011
Hummer H2 2008 2009
Pontiac G3  (sedan) 2007 2009
Pontiac Torrent 2007 2009
Pontiac Vibe 2009 2010
Saturn Outlook 2007 2010
Saturn VUE 2008 2010
Suzuki XL-7 2007 2009

Converter adjustment instructions:
  1. After completing all of the necessary connections, turn the adjustment pots all of the way down by rotating them completely counter-clockwise.
  2. Turn the stereo system on and adjust the main volume control on the stereo to approximately 3/4 maximum volume.
  3. Select one of the adjustment pots and turn it slowly clockwise until you notice audio distortion and then stop.
  4. Turn the remaining pot to the same position as the previously adjusted pot.