+ Goloured sleeve wire whose also serves as a reference marker : reference on diagrams : FN-81, F.Ve-Bc - Wire «without a reference marker ; This is a wire whose position cannot give rise to any confusion. IMPORTANT : The references for the parts and harnesses are arbitrary : they are to enable the diagrams to be used. In reality the of the and wires are the only references used on the wires making up the electrical installation of the vehicle,