i just bought a pioneer DEH-P3000IB from a friend for my car. There was a wiring harness already on it for his car but the stock plug for my radio fit into it and i plugged that in and the antenna plug into it and it didnt turn on. Now im guessing it didnt work because the wiring harness wasnt made for my car. But when i put my stock radio back in, it is a delco part# 9380152, it wasnt working. It would take and eject cds, and when i pressed the hours and minutes button the time would turn on for 5 seconds and then go blank. Radio and cd player wont work, i checked the fuses and the fuse isnt blown so i dont understand what the problem is. could someone please help me id really appreciate it. my car is a 1996 chevy lumina