Was going to post this in the audio but there were no post there. My stereo in my 99 frc works ok but it has a bose stereo and there is no bass. Would the amp gone bad? Where is the amp located. thanks for any help.

 

From what I understand, there is an amp for a woofer in each door (no woofers in back). In at least some C5s, fuse 28 in the passenger foot well controls the power to the bose speakers. One of the wires should have 12 volts and one ground for the amp in the speaker.