312C, 315C, 318C, 319C, 320C, 321C, 322C, 325C, 330C and M325C Excavators and 325C MHPU and 330C MHPU Mobile Hydraulic Power Units Engine and Pump Control – V2 – Harness and Wire Identification

The colors and the sizes of the wires that are shown in the Electric Circuit Diagram are identified and described in the following chart:

Table 1
Symbol     Color    
BK     BLACK    
BU     BLUE    
BR     BROWN    
GY     GRAY    
GN     GREEN    
OR     ORANGE    
PK     PINK    
PU     PURPLE    
RD     RED    
WH     WHITE    
YL     YELLOW    

The following example will explain the wire identification:

  • An example is listed. 308-YL-18

308 – The identification of the circuit

YL – The color of the wire

18 – This number represents the size of the wire (AWG) according to the standards that are set by the American Wiring Gauge. The gauge of the wire will be No. 16, if the gauge has not been specified.

Illustration 1 g00663022

Partial Diagram Of An Electrical Circuit

(1) Harness symbol for harness “A”

(2) Harness symbol for harness “L”

The harness symbol (1) or symbol (2) is shown on the connector or the terminal of a component. The symbol “A” identifies harness “A” and the symbol “L” identifies harness “L”.