928 Tips
Audio
1989 Audio Upgrade
Antenna Booster Power Connection
Antenna Conversion to Roof Mount Type
Antenna Replacement, S4/GT Roof Mounted
Audio Specialist Recommendation
Blaupunkt Phoenix MP33 Review and Tips
Blaupunkt Reno Clock Set Instructions
Broken Radio - No Sound
Brown/Yellow Wire Near Radio
Front Door Speaker Replacement
Major Audio Upgrade for 86.5 928S
MBQuart Speaker Model Numbers
Power Antenna Replacement
Radio Upgrade
Radio Upgrade
Rear Speaker Removal
Speaker Dimensions, 1989
Speaker Removal on an '89
Speaker Replacement Advice
Speaker Wiring, Rear
Speed-Dependant Volume
Stereo Modifications, 1991 
Subwoofer Installation Tips