Pelican Parts: Porsche 924/944 Electrical Diagrams The current flow diagram can tell you everything that you need to know right away. Electrial Diagrams 924 (1978) Legend, Current Flow Symbols. Part 1 - Page 1, Page 2,Legend. Part 2 - Page 1, Page 2,Legend. Part 3 - Page 1, Page 2,Legend. Part 4 - Page 1, Page 2,Legend.