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PAC AP4-FD21 thumbnail image
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5 star
83%
4 star
17%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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Easy install and works as it should

Did a search online and got a lot of different methods to get around the bass "rolloff" and none seemed simple to me. This is plug and play and it works. Installed in my 14 F150 Platinum. Was able to harness all the sound I wanted without losing any of my options and features of the factory head unit with chimes, backup cam, navigation, etc. Will purchase again for my other Fords.

By DJ on May 10, 2023 Checkmark Icon Verified purchase

38 found this helpful


Easy install

Very easy to install after you get passed removing all the dash components. Very user friendly and good instructions. Online computer app pretty useful as far as adjusting settings of the line converter.

By Brian on July 9, 2020 Checkmark Icon Verified purchase

38 found this helpful


2014 Ford Edge w/Sony Premium & 8" Navigation

Installed in my Edge, just made sure the radio was 24pin to the head unit and 54 pin to the Cd player and it worked great, just ran my Rca cables and remote turn-on wire and purchased the Axxess (Metra)bypass harness (AXABH-F01)for Sony amp and rewired tweeters on Ch 1&2 (HPF) and the front Doors on CH 3&4 (FULL) and the backdoors on CH 5&6 (FULL) of my 6 Channel amp (Rockville Krypton 6) and it works prefect. I also ran a Rockghost V2 11" in the spare tire subwoofer. This little SUV ROCKS !!!!!!! Just fyi, Sonic is the only sight that said the Amp pro would work with my vehicle !!!! Thanks Sonic you are the BEST !!!!

By Kenny H on February 10, 2024 Checkmark Icon Verified purchase

23 found this helpful


By Brandon on March 30, 2024 Checkmark Icon Verified purchase

9 found this helpful


By Brian on May 15, 2024 Checkmark Icon Verified purchase

1 found this helpful


By Devin on November 29, 2024 Checkmark Icon Verified purchase


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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.