Review on Innovative Metra 70-1786 Radio Wiring Harness for Mercedes 94-04/Landrover 99-04 - Simplify Your Vehicle's Audio System Installation by Joseph Redding

I used it on a 2001 Land Rover Discovery 2 with a Harmon Kardon (HK) system. You can also use a non-HK wiring harness to install an aftermarket HU, but the speaker output must be turned off if the factory amplifier interface is installed in the original wiring through the wiring harness. Interface: https://www.amazon.com/gp/aw /d/B00009UHSO/ref=yo_ii_img Otherwise, you will soon hear the TV's high-frequency sound (which you hear when the TV is on) coming out of the speaker when you turn on the HU . ground loop noise. So I had to take a ground loop isolator (x2). I wish Metra would add a few more cross references to these harnesses and shield the wires a bit. Hence minus 1 star.