- by model range (e.g. J64);
- according to the installed engine, indicated on the nameplate on the engine, and according to the engine index (e.g. E7J 764);
- by the date of manufacture of the car;
- according to the general characteristics of the car (e.g. left hand drive, air conditioning).
Schematic diagrams show the internal circuits of simple electrical components (connectors, relay), which makes it easier to understand the operation of the system and diagnostics. The diagram shows:
- electrical appliances with assigned number;
- connectors marked with a letter followed by a number (R107);
- connections with «weight», denoted by a letter followed by a letter or number (e.g. M4 or MG).
Connection diagrams with «weight»
Connection diagrams with «weight» show connection points with «weight indicating their location on the vehicle.
Connector nomenclature
Descriptions of all connectors used in the electrical wiring of the car are given and given. For each item in the nomenclature:
- a graphic representation of the connector is given, as well as the purpose of its pins;
- a list of electrical wires connected to this connector is given, indicating the pin number to which each wire must be connected;
- section of each wire;
- purpose of each wire.
Wire colors
The main electrical circuits use wires of the following colors.
Red | «+» 12 V before ignition switch |
Yellow | «+» 12 V after ignition switch |
Blue | chain of marker lights or identification devices |
Black | direct connection to «mass» |
For other circuits and connectors, wires of other colors are also used: white, blue, beige, gray, yellow, black, orange, red, pink, green, purple, as well as transparent wires.
VA | White |
BE | Blue |
BJ | Beige |
SU | Transparent or white |
GR | Grey |
JA | Yellow |
MA | Brown |
N0 | Black |
OR | Orange |
RG | Red |
SA | Pink |
VE | Green |
VI | Violet |
chains «+» starter, interleaved connections with «weight», polarity reversal circuits do not belong to the main electrical circuits.
Presence or absence of circuit protection devices (fuses and bimetal fuses) does not affect the applicability of electrical wires.
The colors of electrical wires on electrical equipment supplied as spare parts do not comply with the above rules in all cases.