Each of the electrical circuits that supply consumers has a fuse of the appropriate power. Relays are used to power consumers that consume high current. In this case, two circuits are distinguished: one is a low current circuit that controls the on and off of the relay, and the second is a high voltage current connected to the relay contacts, which are adapted to connect a large current. Usually, on the one hand, the current flows to the relay directly from the battery and through the high voltage current contacts to a specific consumer.
The electrical diagram presents individual electrical circuits in order, making it possible to navigate the laying of electrical wires.
The horizontal lines at the top of each diagram represent the connections in the relay plate. Black dots at wire intersections represent non-disconnectable connections of those wires. Symbols of disconnectable connections have numbers added next to them, for example, 2/45, where:
2 - indicates the contact number on the relay plate;
45 - indicates the number of the contact (e.g. relay), inserted into the plate.
All switches are shown in the diagrams in position "switched off". The vertical lines represent the wire bundles and the bottom horizontal lines represent the mass of the vehicle, see fig. 4.18. and 4.19.
To facilitate the search, the composition of graphic symbols is indicated. used on diagrams (scroll), To find a specific consumer, you must first select from the list of circuits the one on which it can be located. If you need to find a generator, first there is a circuit with the name "Generator". In this scheme, the generator is searched for by using the graphic symbols given in the figure or alpha-number designations, bottom in paragraph 41 (pic. 4.19). Near the graphic symbol, in the place of the wiring, there is a number that determines the number of the terminal on the consumer. The wire must be connected to the consumer terminal of this number. It is also necessary to do the same with the numbers of the outputs from the relay box and the numbers near the ground. The numbers in the circles next to the tire mass are used to find "mass points" on the body. Approximate position "mass points" can be determined on the basis of the information given in paragraph 42.
Pic. 4.18. Example of symbols used in electrical diagrams
1 - tracks on the relay plate; 2 - disconnectable connection; 3 - wire section; 4 - non-disconnectable connection; 5 - relation to the chain in which the track goes further; 6 - wire color designation; 7 - number of the place of the relay on the plate; 8 - graphic designations of elements (pic. 4.19); 9 - alphanumeric designations; 10 - vehicle weight (electric); 11 - points of mass.
Pic. 4.19. Graphic symbols of the electrical circuit
1 - fuse; 2 - battery; 3 - starter; 4 - generator; 5 - ignition coil; 6 - spark plug electrodes; 7 - glow plug, heating resistor; 8 - automation of the carburetor start system; 9 - temporary thermal switch; 10 - ignition distributor, mechanical; 11 - ignition distributor, electronic; 12 - two-stage wiper switch; 13 - relay with electronic control; 14 - multifunctional projector; 15 - sound signal; 16 - flow indicator; 17 - speed meter sensor (speedometer); 18 - wire distributor; 19 - disconnectable connection; 20 - non-disconnectable connection; 21 - connection inside the equipment; 22 - support wire; 23 - engine heating valve, additional air valve; 24 - solenoid valve; 25 - electric motor; 26 - manually operated switch; 27 - bimetallic switch; 28 - button, driven manually; 29 - mechanically controlled button; 30 - switch controlled by pressure; 31 - multi-contact switch, manually activated; 32 - fuel level sensor; 33 - coolant temperature sensor; 34 - relay; 35 - rheostat; 36 - diode; 37 - Zeneid diode; 38 - luminous diode; 39 - deviation indicator; 40 - electronic command controller; 41 - watch with arrows; 42 - digital clock; 43 - sound signaling device; 44 - lamp; 45 - a lamp with two filaments; 46 - interior lighting lamp; 47 - cigarette lighter; 48 - heated rear window; 49 - plug connection; 50 - multi-pole plug connection.
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