2000 stereo installation problems

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My mustang:

2000
V6
No mach system
Factory split head units receiver/cassette and CD


Here's my dilemma...sorry if this is long but I figure the more info I give the easier it will be for somebody to identify where I screwed up here...


About a week ago, I turned on my car, and then tried to turn on the radio. It made some low growling kind of noise and then turned off. It wouldn't turn back on since. I first checked the fuses under the dash and they all were fine.

Assuming it was a problem with the head unit, I presumed the head unit had blown out and decided to attempt to replace it. (I was going to replace the head unit eventually, anyway.) I removed the two units from the dash without much problem. I've installed aftermarket stereos before so I didn't think it would be a problem. I had the wiring diagrams, and having spliced wiring before, I was prepared to do that again. If I didn't feel comfortable, I also planned to pick up the harness.

When I looked at all of the connections, I realized none of it matched any of the diagrams I had. Upon further research at that point, I discovered that there is a separate amp under the dash. The connections I had break down like this:

CD player:

horizontal 5 wire connector--I believe these are the power cables
Black 6 prong rectangular connector attached to a gray cable
Black ground wire

Head unit:
Antenna plug
horizontal grey 8 plug connector--I believe these are the power cables for the head unit
Black ground wire
Black 6 prong rectangular connector attached to a grey cable
Black 8 prong rectangular connector attached to a grey cable

Assuming the last one would have the speaker wires bundled together, I stripped a small portion of the grey insulation. Instead I found bare wires. I patched it up, and bought a harness that attached to the two 8 prong connectors. I plugged them in and spliced the wires to the head unit's harness. I also ground the black ground wire.

At this point the new head unit powers up fine, but there is no sound coming from any of the speakers.


Any ideas???