1 - the arrow points to the next electrical circuit included in the circuit diagram of electrical equipment;
2 - designation of the plug connector on the relay panel. Indicates the loading of the multi-pin connector with a wire, e.g. X/5 - multi-pin connector X, pin 5;
3 – designation of the fuse, e.g. fuse N2 (15A) in the fuse box;
4 - a link to the further passage of the wire. The number enclosed in the frame indicates the electrical circuit in which the continuation of this wire is located;
5 - designation of the plug connector on the part (construction site). It contains the marking of the multi-pin plug connector, the number of pins and the number of the occupied contact, e.g. T10/9 – T10 multi-pin plug connector, 10-pin, pin 9;
6 - the arrow indicates the continuation of this part in the following circuit diagram of electrical equipment;
7 - detail sign;
8 - designation of the plug connector in the wiring harness. Contains the marking of the multi-pin connector, the number of pins and the number of the occupied contact, e.g. T3/2 – T3 multi-pin connector, 3-pin, pin 2;
9 - designation of the connection in the wiring harness;
10 - a link to the further passage of the inner connection. The number indicates the next part of the circuit diagram in which the continuation of this connection is located;
11 - connection designation - relay on the relay panel. Indicates individual relay contacts, e.g. 85 - plug contact 85 on the relay;
12 - designation of a place for the relay.
Indicates the location for the relay on the relay panel;
13 - section (in mm2) and wire color
14 - designation of the structural unit (details);
15 - designation of the connection terminal with the marking of the plug contact, which is located on the multi-pin plug connector or, respectively, on the original part;
16 - internal connection (thin line). This connection does not exist as a wire, however, the internal connections are electrically conductive. They allow you to observe the passage of current both inside the parts and inside the wiring harnesses;
17 - designation of the ground connection point