ELECTRICAL 322 Circuit diagrams are arranged so that current flow is from top of the diagram (Power source) to the bottom of the diagram(ground). The circuit diagrams are presented with Power distribution first, followed by individual circuits for each electrical system on the vehicle. Power Distribution The Power Distribution diagram shows the connections from the battery to the Battery distribution unit & from battery distributions unit to Main distribution unit and cabin fuse & relay box. Wire attributes Additional information is shown alongside wire 1. Wire colour: There are two kinds of coloured wire used in this vehicle. One is single coloured wire & other is dual coloured (striped) wire. The single coloured wire uses only one colour symbol (e.g. “W”). The dual coloured wire uses two colour symbols (e.g. W-L) the first symbol represents the base colour of the wire (i.e. “W”) & second symbol represents the colour of the strip (i.e. “L”). 2. Wire gauge - the cross- sectional area of the wire in square millimeters. This is included to help the technician to select the correct wire during harness repair. Components Each component represented with his description & connector no. E.g. Description of component - Inlet metering valve & connector No.H-13
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