Hello, my name is Mark and I will try help you with this.
As you have just realised Peugeot don't use a colour scheme for their wiring.
What they use is a number, pin number, terminal colour 3 dimensional scheme.
You need to look close to the ends of the wiring and look for small numbers printed on the cable that will match the numbers on the other side of the terminal block.
Peugeot wiring is a nightmare to follow unless you know how the system works.
That should make it a bit easier for you.