The schemes given below are standard. Before troubleshooting according to schemes check safety locks and degree of a charge of the battery. Make sure that on sockets there is no dirt, and also the weakened and broken contacts. 
Designations of color of isolation of wires, etc. 
BK – black 
BL – blue 
BR – brown 
GE – yellow 
GN – green 
GR – green or gray 
GY – gray 
OR – orange 
PK – pink 
R – red 
RS – pink 
RT – red 
SW – black 
TN – yellowy-brown 
V – violet 
VI – violet 
W – white 
WS – white 
Y – yellow   |