Review on 🔌 Versatile Wire Harness for Toyota and Subaru: Ideal for Amplifier or Subwoofer Installation (Compatible with 1987-2018 Toyota and 2016+ Subaru) by Fred Meeks

Owner of a 2021 Subaru Ouback Onyx XT with non-HK audio system here I think there is at least one other with a review. I agree with their comments that this is a great product that is easy to use and comes with simple but informative instructions that make it easy to solder the wires to integrate the Kicker Key 200.4 DSP amplifier to your upgrade audio system. I'm going to make a few comments that I hope will help people. 1. You don't need to completely remove the main unit for installation. You can tilt it forward after removing the 10mm screws holding it to the dash and removing the top two wiring harnesses. The wiring harness connectors you need access to are located in the bottom corner of the main unit on the passenger side, just put a towel down to protect the switch and trim pieces. 2. If you use Kicker Key 200.4 in combination with it (it's a great option by the way), make sure you activate the "Radio Detect" button before reconnecting the battery, otherwise your main unit will do some strange things and win. not working correctly. until you completely disconnect the battery and activate radio detection before turning the amplifier back on. I will also mention that the seller answered the question perfectly here and delivered it to me very quickly.