1 - Location of the relay. The number 12 indicates the location of the relay on the block.
2 - Designation of a block or element. The block or element designation is given in the specification.
3 - Designation of the fuse. For example: Fuse 19 with a protection current of 10 A.
4 - Designation of contacts. For example: Contact 3/49a. 3 - contact 3 of relay 12 on the relay block.
5 - Designation of contacts on the relay block. A13 stands for pin 13 of connector A.
6 - Wire section in mm2.
7 - Wire color. Wire colors are shown in the wiring diagrams.
8 - Contact designation.
9 - Block or element.
10 - Designation of a block or element and its number.
11 - Continuation of the electrical wiring. The number in the rectangle indicates the electrical circuit to which this wire is connected.
12 - Internal connections.
13 - Continuation of the wiring of the internal connection.
14 - Designation of the grounding point.
15 - Relay and fuse block.
16 - External connections.
17 - Numbers of coordinates. Designed to facilitate the search for nodes in the diagrams.
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