Cable Colour Coding

[JohnD]

I have to fit a new horn. it needs an earth wire (unlike the old one). I can easily do this, but my manual does not have a colour for earth wire. i have an idea it is usually white. Does anyone know the convention?

It is a Toyota.

 

[chainsaw_masochist]

Most commonly earth wires on cars are brown. Might be worth asking on here

 

[JohnD]

thanks, guy on Toyota club says usually black.

 

[Spark123]

Is the car body not negative earth?

 

[Stivino]

Just earth it to the mounting bolt using a new piece of wire of any colour that takes your fancy.