If you accidentally use brown and blue for 12V DC, future workers may mistakenly treat it as 240V and get a lethal shock. Even if it's only 12V, the visual cue can lead to dangerous assumptions in mixed-voltage enclosures.
Often used for Alternating or Switched Loads , such as accessories that only turn on with the ignition. 12 Volt Wiring Colour Codes Australia
In Australian 240V AC wiring:
: Often used for "switched" power, such as ignition-only accessories. If you accidentally use brown and blue for
Note: For 240V mains wiring in a house or caravan, Australian Standard AS/NZS 3000 (Wiring Rules) applies (Brown = Active, Light Blue = Neutral, Green/Yellow = Earth). The 12V system uses a different code. Light Blue = Neutral