Therefore, the battery ground cable is connected to the body. Meanwhile, if such a mass connection is not enough, the consumer is connected to the mass with a separate wire, usually with brown insulation. Separate current circuits include switches, relays, fuses, measuring instruments, electric motors and other electrical elements. For the correct connection of electrical components, the individual connection wires have different colors.
It is recommended to use the wiring diagrams as follows:
Reading electrical circuits requires knowledge of some designations of electrical elements, in addition, you should know the most important circuit designations. All consumers and switches are displayed in the rest state (de-energized)
First, in the table of contents of the electrical circuits, you should find the desired electrical circuit, which is also indicated in the upper part of the electrical circuit. Next to each element is its designation.
Wire colors / Wire size
The letters next to some of the wires determine their colors.
If the wire section is not indicated, it is 0.5 mm2. If the wire code is in brackets, the wire size is 0.3 mm2. The letters mean the following wire colors:
- B = black
- Br = brown
- G = green
- Gr = gray
- L = blue
- Lg = light green
- Sb = silver
- LI = blue
- O = orange
- P = pink
- R = red
- Y = yellow
- W=white
The first letter indicates the main color of the wire, and the second - the color of the stripes. Example: GB means green wire with black stripes.
Designations of variants of car models and positions of elements
The following abbreviations are used in electrical circuits:
- ABS = anti-lock brake system
- A/C = air conditioner
- A/T = automatic transmission
- CHG = charge warning lamp
- DIESEL = vehicle with a diesel engine
- FBC = electronically controlled carburetor
- F/GA = fuel gauge
- GND = ground (grounding)
- HEAD = headlights on
- ILL = illumination
- IND = indicator lamp
- INT = work in interval mode
- J/B = fuse box
- LH = left
- MPI = vehicles with multi-port fuel injection
- M/T=Gearbox
- PETROL= gasoline powered vehicles
- REED = reed switch (speed sensor)
- RH = right
- SOHC = Overhead Camshaft Engine
- DOHC = engine with 2 overhead camshafts
- TAIL = external lights on without headlights
- T/GA = coolant temperature gauge
- T/L = control lamp left
- T/R = Direction indicator lamp right direction indicator