AP4 Expansion Harness for Select 2021+ Amplified Chrysler, Dodge, Jeep, RAM

$53.00 APHCH42

For select Chrysler, Dodge, Jeep, and RAM vehicles with factory amplified, or non-amplified sound systems


Must be used with AP4-CH41 R.2 (CLICK HERE FOR MORE INFO).

Compatible with both amplified and non-amplified factory systems.

Amplified Vehicles

  • Compatible with all data-bus controlled amplified systems, no matter the screen size. To identify these systems, look for logos on door speakers, tweeters, dash speakers or the subwoofer to confirm if the vehicle has a compatible amplified system: Alpine, Beats or Harman Kardon. Some vehicles may not always have branded compatible systems. Unbranded amplified systems are generally identified by locating a center channel speaker or subwoofer.

Non-Amplified Vehicles

  • All other models: Only compatible in vehicles equipped with the 7” or bigger screen. Vehicles equipped with the 5” screen are not compatible.
  • If you are installing the AmpPRO in a vehicle that is not equipped with a factory amplifier, you must add an amplifier to the vehicle's speakers, as the factory radio will no longer have a 4-channel variable output after it has been re-configured by the AmpPRO. For example, this will not work to add only a subwoofer to a non-amplified vehicle, as the radio will no longer power the cabin speakers properly.

 Must be used with AP4-CH41 R.2 (CLICK HERE FOR MORE INFO).

Plug and play solution for UConnect5 that allows you to use an AmpPRO with most Chrysler vehicles. 


  • Simplifies amplifier installation
  • Prevents the need for summing and DSP devices
  • Provides factory sound system upgrade solution
  • Provides flat audio output for a solid audio foundation


  • It can be used to upgrade the entire sound system or just part of it thanks to the retention of the original amplifier
  • Variable volume, fade, balance, bass, mid and treble audio settings
  • Front, rear, sub preamp outputs (5 volt RMS)
  • Customized OE bass, mid and treble center frequency selection
  • Retains uConnect, Bluetooth audio, Navigation prompts, and all warning chimes
  • Plug-n-Play installation
  • Sublevel controller
  • Optional TOSLINK optical output (APA-TOS1 sold separately)

Also available for fast, easy install: APH-CH01 harness (sold separately)

Select non-amplified vehicles are equipped with an ANC system that requires bypass.  Plug-n-Play bypass harness: ANC-CH01