94 explorer aftermarket head unit

Hey, Bought the harness pluged in the deck. No SOUND   WHATS UP?

I had the same thing happen...it was the factory amp turn on Factory amp is behind rear passenger panel.

You can "get to" the output side of the amplifier (the wires) in the passenger door opening just after the B pillar. Look, you'll see them all wrapped up in one bundle. The amp out, and in, run down this side of the rig, so get the correct bundle of wires. You can cut them and give them a pop with your 9 volt battery to make the speakers pop. Be safe, there is also 12 volts in that harness for the amp. If you cut them at the rear seat, and run them foward, you can get them up behind the aftermarket deck and hook them up to the OUTS on the deck. What you have done, is created your own amp bypass. I have done this LOTS....it works great....take your time.  The colors of the wires your looking for in this harness, are the standard ford harness colors, look em up. The only reason I say to use the factory harness is so that you DON'T need to patch in your own pieces of wire....use whats already there.