1.0 Location of designations on electrical diagrams.
1 - dot «masses» (-)
2 - designation of the consumer of the on-board network
3 - wire number
4 - wire connection point
5 - wire insulation color
6 - wire connection point
7 - fuse number
8 - display connection with another circuit diagram
9 - designation of the consumer of the network
10 - only available on certain models
11 - consumer switching circuit
12 - connecting wire
13 - branching wire
1.0a Additional designations on electrical diagrams
14 - wire harness numbering
15 - fuse box
16 - wire connection number
17 - connection
18 - the color of the insulation of the connecting wire
19 - partial connection
20 - wire connection