PAC AP4-FD21

We are a PAC authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!

What’s Inside?

< li > AmpPRO module

< li > 24-pin and 54-pin harness (MS CAN) (Dual MS CAN)

< li > Bass knob

< li > Knob harness

< li > Owner’s Manual

Simple to Install

The package’s T-harness plugs into the factory radio and vehicle harness. The small module fits behind the dash, converting your radio’s speaker outputs into six preamp-level outputs ready for connection to your amp. The factory amplifier needs to be left connected in the vehicle.

The factory radio controls, such as volume, balance, and fade, will work as before for your front and rear speakers. A separate wired remote level control lets you adjust the volume of the subwoofer channels from your front seat. An optional add-on module, PAC’s APA-TOS1 adapter, provides an optical digital output for your high-end digital processors and amplifiers to handle.

You can make a less-than-ideal factory system actually sound premium by upgrading the weak factory amplifier with a more powerful aftermarket amp. PAC’s AmpPRO interface consists of a module and a vehicle-specific T-harness that make the job much easier. Now, you can install an amplifier of your own without losing any of your vehicle’s factory audio features like warning chimes, navigation prompts, and Bluetooth functions.