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Porsche
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1989
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928 GT V8-4957cc 5.0L
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Repair and Diagnosis
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Power and Ground Distribution
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Technical Service Bulletins
Power and Ground Distribution: Technical Service Bulletins
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By Symptom
Abnormal wear/deterioration
Brake Light/Cruise Control Fuse - Blown
Low power/performance
Battery - Checking Constant Current Draw
All Technical Service Bulletins
Seat Heating Wiring Diagram - Update
Wiring Diagram - Update
Electrical Harnesses - Routing and Securing
Electrical System - Poor Pin/Ground Lug Connections
Battery - Checking Constant Current Draw
Brake Light/Cruise Control Fuse - Blown