I just sucessfully installed some baseline Pioneer 4" Speakers in the front. And I got my 5.25" In the front today and tried to Install them. I snipped the blue tabs in the trunk on the ceiling so I could slide the Speakers out from under the Rear Dash that I pried up. I just unplugged the Factory Speakers and Plugged in the new ones and they will not work. I didn't unplug the battery doing this, I dont know if that was a mistake. I Put a new nut and bolt into the corner of the speaker house with the metal screw hold which I assumed was for ground.. The speakers just dont seem to work. The volume is Up, and only the front speakers are working..

Thanks! :/