PSA Electrical Diagrams - Component Coding
Components have a four figure number e.g.: 4310.
The first two figures indicate the function, the two following figures identify the component.
The numbers for indicator lamps are preceded by the letter V e.g.: V2610.
Special numbering of equipment which supplies an electrical feed
BB00: battery
BB10: battery + ve unit
CA00: ignition switch
BF00: fuse box
Free connectors which have a particular function (e.g. testing a function) are numbered as components with the letter С in front e.g.: C1300.
Numbering of earth points
The letter M is used followed by an identifying number
Examples: M2A, M90C
Splice Numbering
The letter E is used followed by an identifying number
examples: E028, E002
Application of an alphabetical index if the splices are identical, e.g.: E005A, E005B
Interconnection Numbering
The letters IС are used followed by a 2-digit identifying number. Application of an alphabetical index if the interconnections are identical, e.g.: IC20, IC05A, IC05B.
Numbering of Bridge Block Connectors
The letter В is used, followed by a 3 figure number, e.g.: B001. Application of an alphabetical index if terminals are identical e.g.: В00ЗА, В00ЗВ.
Wire Coding
This code enables linking of the wire number to the type of supply or the electrical function. Supply is broken down as follows:
Supply before a fuse
BB: battery + ve supply
AA: accessory + ve supply
CC: ignition controlled + ve supply
W: sidelamp + ve supply
KK: + ve supply after ignition switched off
Example: B02A (type of supply+ fuse number+ wire identification number, figure or letter).
Specific Supplies
M: earth
D: screening
Example: M262 (type of supply+ wire identification number, figure or letter).
Comments: each vehicle has special features in the coding of the wires concerning the supplies (they are handled as variants).
Abbreviations
These abbreviations are quoted on the terminals of certain components (e.g. ignition switch).
+ BB: battery + ve.
+ AA: accessory + ve.
+ CC: ignition controlled + ve.
+ KK: + ve after ignition off.
Wire Sleeve Colour Codes
| Code | Colour |
| BA | White |
| BE | Blue |
| BG | Beige |
| GR | Gray |
| JN | Yellow |
| MR | Brown |
| NR | Black |
| OR | Orange |
| RG | Red |
| RS | Pink |
| VE | Green |
| VI | Mauve |
| VJ | Green / Yellow |
| ND | No Specific Colour |