By the way, I might know why your stereo won't work: The ground wire in the radio harness isn't connected to anything. The (-) power lead to the stereo goes through the frame -- not the harness.

I yanked my stock radio, plugged in the new one and it didn't work! So I plugged the stock radio back in, and IT didn't work anymore! At this point, I just gave up and decided to stuff everything back into the dash and get help.

As soon as the stock radio grounded itself to frame, it kicked on!

Once I ran a pigtail from some grounded metal to the radio, the new stereo worked great! Hopefully, your problem is just as simple.