Originally Posted by subman576

I Installed my Kenwood Radio today and wanted to pass on some of my takes on it. I installed the KDC-BT782HD a CD model. Because of reading several other write ups on installing an after market radio I was still left with questions. I tend to over think things so this is for people like me. The first thing I noticed when I pilled the Factory radio was that the B section of the wiring plug is only wired for front speaker outputs (see pic) so it's a waste of time connecting the rear wires. After listening to my rear speakers I am guessing they are just sub-woofers, correct me if I am wrong but they produce sound with only front speakers output to the OEM amp. Next just to make sure I tested the A section to make sure that RED (A7) is AUX switch power and YELLOW (A4) is to battery and they are. Before I bought the new radio I researched the wire adapters and contrary to others I purchased the Metra 70-9401. It works perfect with the Kenwood radio. You don't need to switch the red and yellow wires because they are in the correct place. It is an exact color to color connection to the Kenwood plug except the A5 wire to switch on/power the amp, is Blue and the Kenwood wire is Blue/White. This makes 8 wires to connect. 4 in the A section (Black, Red, Yellow and Blue to Blue/White) and 4 in the B section (Gray, Gray/Black, White, White/Black). I then put the 2 harnesses together by cutting the wires short to make them easy to fit behind the radio then soldering the connections and sealing them with shrink tape (don't forget to put shrink tape on before soldering). I then cut back the unused wires, folded them over and shrink taped them. See pic's. There is nothing wrong with crimp connectors or wire nuts I just like solder. I put the mic for the hands free in the left pillar post and that install is covered well by others. I will only say when you are prying the pillar trim off do it from the left side and pry hard and move it back and forth just a little while prying. Next I put the mounting sleeve in and at first I thought it went in to far but it was correct. You don't have to bend any tabs for this model it locks into openings already part of the dash. All that's left is to plug in the wires. The A/B adapter terminals move around a little so be easy on it until you are sure they are all started. Connect the antenna adapter to the Euro antenna plug then plug in the mic, antenna and power plug to the radio (you will have already removed the face and trim piece) then slide in the radio till it licks in place. Reinstall the trim piece and face then power it up. Mine sounds fantastic and will blow you out of the car. All of the setup instructions are in the book. I will link my phone tomorrow as I finished late and set up Alexa. I hope this fills any gaps that you might have had and feel free to ask questions.