transfer of car/truck radio

I removed the working radio from my dead 95' Dodge Ram 1500 truck and I'm putting it in my son's 87' Lincoln Town Car.  Everything is working (I got the wiring color coded diagrams from here) but I can't get any sound.  What could be the problem?  The sound was working with his old stereo.CherokeeRam95

On the lincoln, the OEM plugs that plugged into the radio, were they similar in shape to each other? Or was one long and flat and the other near square? Did you power the wire labeled power antenna?

One was long, flat, and black.  The other was square and gray.  I used the wiring harness provided by Best Buy for the truck radio and matched the wire color codes for each vehicle (power constant, power switch, left front+, left front-, etc.) per the listing from this site.  The power antenna is on its own switch and not powered by the radio.CherokeeRam95

Metra 70-5510 may be needed. Google search the part number and see if your plugs match up to those. The smaller square plug should actually be your factory amp inputs and using that harness will give you rca's to plug into the new radio. Post back before buying the harness if your radio does not have front/rear rca hookups. May be more prudent to just run the wires to the speakers. More work but less $ provided you have speaker wire. To master and control electricity is perfection. *evil laugh*

If there is a power antenna wire on the harness, it also powers the amplifier turn on circuit.