- S - black
- G - green
- L - blue
- O - orange
- R - red
- W - white
- BR - brown
- GR—gray
- LG - light green
- P - pink
- V - purple
- Y - yellow
Wire designation RG" means, for example, that we are talking about a red wire with a green stripe.
All electrical diagrams have numbers in black circles. They refer to the names of certain parts and do not have any meaning when studying an electrical circuit.