the wiring in 205's and 306, 405 etc is numbered.
its the numbers that matter, not the colours of the wires which can be different on diff cars
the numbers are located just above each plug, about in the last 60mm of each end of the wire
others with your model may be able to assist, what model and year is it and pics help also
Car 2004 407 V6 3.0l petrol.
Unfortunately the original plug had been cut of and another one spliced in.
I will unravel the wiring until I can access the number of each wire, might take a while till I get back to youall.
Thanks for the info
Have now been able to access the wiring on the 6 Pin accelerator plug they are 1109 Red/Orange - 1220 Yellow - Green 1219 - Grey 337 - Brown (unable to read number) - 2009 White.
I beleive that one of the wires was broken, so replaced them all and that worked, I now am able to increase the revs as normal.
Thanks again for you all for your help and patients.