Component Placement Volvo Bus Corporation Symbol explanations See also, 300, Component placement, Description, Design and function The reader is advised that printed copies are uncontrolled. 4 Symbol Explanations A: View from side B: View from above 1: Alternative cable routing 2: Area marked with light colour and dashed lines. The area shows where a control unit and /or a connector piece can be located Symbol for electrical distribution unit Symbol for intermediate connector piece Symbol for intermediate connector piece in grey to show that it is placed behind a component (e.g. the engine).