Review on Scosche FDK13B Premium Sound & MACH Audio Wire Harness and Connectors: Compatible with 2000-05 Ford Models for Power/Speaker, RCA to Sub Amp Input by Bryce Marshall

You're probably buying this to fit an aftermarket head unit in an Explorer or Mustang, right? This is the number one choice if you want to continue using your standard amps with a top-of-the-line Mach 460 or 1000 stereo. I used this in my 2003 Mustang and it fit perfectly. It was easy to use and I recommend it over Metra.