I have allocated a colour to every wire now, but I can't agree with the statement that there is a colour for everything within the British Standard.
There doesn't appear to be one for a tachometer fed from a contact breaker - I am intending to use black/blue for this function, which is the colour for one of the wires normally used to supply a tachometer from a generator, so a little adapting, or substitution, will be required.
The 2CV also has a wire from the hazard switch to the flasher unit - I am told that this is peculiar to Citroen, because of their own switch design, and, as a result, there isn't an allocation for that connection.
i suppose that one could say that there is a colour within the British Standard for every wire - except when there isn't !
John
I wouldn't have thought a French Citroen would be wired to British Standard AU7 or am I missing something