FITS THE FOLLOWING VEHICLES: 
Lexus
CT 200H (without Navigation)  2011-2013
ES 350  2007-2009
ES 350 (without Navigation)  2010-2012
GX 460 (without Navigation)  2010-2013
GX 470  2007-2009
HS 250H (without Navigation)  2010-2012
IS 250  2006-2009
IS 250 (without Navigation)  2010-2013
IS 350  2006-2009
IS 350(without Navigation)  2010-2013
RX 350  2008-2009
RX 350 (without Navigation)  2010-2012
RX 400H  2007-2008
RX 450H (without Navigation)  2012
Toyota
4 Runner  2010-2013
Avalon  2011-2012
Sequoia  2008-2012
Sequoia (Equipped with JBL and 20-pin BHA8113 style radio harness)  2013-2014
Sienna  2011-2014
Tacoma  2012-2013
Venza  2009-2012
Venza (Equipped with JBL and 20-pin BHA8113 style radio harness)  2013-2014
-------------------------------------
THIS 2 ITEM PACKAGE SHIPS WITH: 
PAC AP4-TY11 Amplifier integration system +
PAC APH-TY04 Speaker wire harness 
-------------------------------------
PLEASE READ: We have had returns for this product stating that it was difficult to install. Please note that these products are made for  professional installers and/or people that is knowledgeable in car audio systems. You need to make sure you understand your vehicle's connectors and speakers. The instructions provided are a general guide and not particularly will be a match to your vehicle's system or application. If you don't have experience with these type of installations, please contact a professional installer. 
GENERAL FEATURES:
AmpPRO simplifies the installation of upgraded amplifiers in data-bus controlled sound systems. With AmpPRO, you can improve audio performance while keeping an original radio’s fit, finish and features.
Simplify speaker wire connections by using the speaker connection harness when adding aftermarket amplifier(s) to select Toyota vehicles. Featuring OEM quality, factory style plugs, the harness quickly and securely plugs into the factory amplifier harness allowing an aftermarket amplifier to be more easily installed. Industry standard wire colors on the wire harness makes identifying the factory speakers faster and also ensures proper speaker wiring polarity.
What You Will Receive
PAC Amplifier Integration Interface
PAC Speaker Wire Harness
Wiring Harnesses
General Installation and Operation Instructions
Benefits
Simplifies amplifier installation
Prevents need for summing and DSP devices
Provides factory sound system upgrade solution
Product Features
Can be used to upgrade the entire sound system or just part of it thanks to retention of the original amplifier
Enables the addition of a subwoofer system to the original sound system
Upgrade solution for factory, fixed level, data-bus controlled sound systems
Everything you need in one box to install your choice of aftermarket amplifier(s)
Time-saving design, prevents need for summing and audio correction devices
Variable volume, fade, balance, bass, mid, and treble audio settings
Retains Bluetooth, navigation, safety system, and all warning chimes
Front, rear, sub preamp outputs (5 volt RMS)
Provides flat audio output for a solid audio foundation
Customized OE bass, mid, and treble center frequency selection
Plug-n-play installation with two 20-pin connectors (IE Bus)
Remote sub level controller included
EIA standard color coded wires makes identifying factory speaker wires and phase easier
Speaker harness eliminates having to run new speaker wire throughout the car
18” Harness length
Compatibility Requirements/Notes: 
The factory amplifier must stay connected.
Vehicles with Telematics (ie: SOS, Enform, etc) will require some additional wiring to retain these systems. Please contact seller for further details.
Toyota vehicle must be equipped with a JBL system. There must be an actual visible label that says JBL or JBL Synthesis. If the vehicle is equipped with a factory amplifier but does not say JBL, it is not compatible because the amplifier is analog and not digital.

***Only compatible with the listed vehicles***
Additional Notes
Upon request, with your purchase, we will email you a diagram that shows how to remove the factory radio (if available). This is what most consider is the hardest part of the installation. With this diagram; installation is a piece of cake.
If you have any questions or concerns with the product please feel free to contact us at Ask Seller a Question so we can assist with any technical or customer support to resolve any issues.
Vehicles NOT made for the U.S. market are not compatible and are not guaranteed.
Also visit our eBay store for more Car Audio and iPod accessories.