I had a Pioneer head unit in my car and switched it yesterday with the DEH P3100UB. All the wiring...
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I had a Pioneer head unit in my car and switched it yesterday with the DEH P3100UB. All the wiring was the same and I'm absolutely sure we connected everything correctly. It turns on and says it's playing the CD, but there is no sound! We tested all the wiring with a computer speaker, and two sets of wires work but the other two don't. The speakers themselves are only 4 months old and were working perfectly 5 minutes before we put in the new head unit. Any ideas on why this could be and how to fix it? Also, will the USB port work with a Zune? Amazon said it works with MP3 players, but when I plugged it in, it didn't recognize it. Any help would be greatly appreciated.