Several platforms offer access to the Alfa 159 technical documentation in PDF format:
Finding a complete Revue Technique Automobile (RTA) for the Alfa Romeo 159 Sportwagon (SW) in PDF format is easiest through community forums and specialized documentation sites. Top Sources for Technical Manuals Scribd (Comprehensive Technical Guides) Revue Technique Alfa 159 Sw Pdf
The 159 SW has over 30 electronic control units (ECUs). The wiring diagrams in the original print are microscopic. A PDF allows you to zoom to 400% to trace the CAN bus wire from the Body Computer to the rear light cluster. Several platforms offer access to the Alfa 159