198002604 - KEY

Each cable in the wiring diagrams features a code (with one or two letters) which identifies the colour, as set out in the table below.
Cable colourCode
BLACKN
WHITEB
LIGHT BLUEA
BROWNM
YELLOWG
REDR
GREENV
GREYH
PINKS
ORANGEC
PURPLEZ
BLUEL  
In the combined colour cables, the first colour indicated is the predominant one. E.g. RV = red cable with green stripes