Fans of an obduv of the main heater of a body are given to rotation by the bipolar electric motor — with excitement from permanent magnets. Turning on of the electric motor of the main heater is carried out by means of the switch having four provisions:

- it is switched off;

- small turns;

- average turns;

- big turns.

At small and average turns the chain of the electric motor turns on the resistor.

The fan obduva and heating of interior of the car is given to rotation by the bipolar electric motor of a heater with excitement from permanent magnets.

Turning on of the electric motor is carried out by means of the switch having three provisions:

- it is switched off;

- small turns;

- big turns.

At small turns the chain of the electric motor turns on the resistor.

The electric pump of system of heating is given to rotation by the bipolar electric motor with excitement from permanent magnets.

Turning on of the electric motor is carried out by means of the switch of an additional heater.

On the car the single-wire system of turning on of devices of electric equipment three which the second wire ("weight") serve the car case is applied. At damage of isolation of a wire can directly concern the car case, causing the short circuits leading to burn-out of safety locks to an obgoraniye of isolation and even to the fire.

For convenience of installation and protection against mechanical damages of a wire are braided with the fastening braid in plaits.

At surveys of the car it is necessary to check carefully a condition of isolation of wires, preventing their damages (a mastication about sharp edges, excessive sagging, etc.). Special attention has to be paid to purity and reliability of accession of wires to conclusions of devices of electric equipment. Wires even with insignificant damage of isolation need to be wound with an insulating tape. Poorly tightened or polluted and oxidized conclusions to smooth out and tighten. It is necessary to watch carefully that on a surface of wires oil and gasoline as they destroy isolation did not get and reduce service life of wires.

At repair of an electrical wiring it is necessary to use the schematic diagram of wires on which coloring and sections of wires are given.

Under a cowl there is on the right a block of safety locks BPR-2M5 where the fusible insert on 90 A protects a generator chain, a light chain of the car, and the fusible insert on 60 A protects the general plus chain of the car, except light, and chains of a starter and the generator.

At the left under the dashboard on an arm two blocks of BPR-13 fuses are installed. Sizes of extreme current in amperes for each safety lock and the chains protected by them are specified in tab. 9.7.

The chains protected by fuses
Number of a safety lock	Current, And	The chains protected by fuses
Safety locks of the top block protect chains:
1	25	reserve
2	15	alarm system
3	15	switch of the rechargeable battery of the radio tape recorder
4	10	screen wiper, windscreen washer, right number of plafonds of salon
5	10	relay of headlights
6	10	braking signals
7	20	sound signal, lighter
8	20	the electric motor of a heater, the electric pump of system of heating (buses and cars with two rows of seats)
9	15	the electric motor of an additional heater (buses and motor vans with two rows of seats)
10	10	combinations of devices, light of a backing, sensor of speed, breaker of a signaling device of the parking brake, screen wiper relay
11	5	reserve
12	15	microprocessor system of ignition (ZMZ-4061,-4063)
13	10	indexes of turn
Safety locks of the lower block protect chains:
1	25	reserve
2	15	driving beam of a right headlight, signaling device of driving beam
3	15	driving beam of a left headlight
4	10	passing beam of a right headlight
5	10	passing beam of a left headlight
6	10	fog lamps, signaling device of fog lamps
7	20	reserve
8	20	reserve
9	15	plafond of a cabin, plafond (plafonds - GAZ-2705 with one row of seats) cargo inside, a plafond of illumination of a footboard of buses, a podkapotny lamp, the left number of plafonds of illumination of passenger inside of buses
10	10	illuminations of devices, switches, priukurivatel
11	5	reserve
12	15	dimensional light of the right board, proofreader of headlights, plafond of a ware box
13	10	dimensional light of the left board, signaling device of dimensional light, illumination of registration plate

Note The set of spare safety locks is put to the car. For extraction of a faulty safety lock use tweezers in a set of spare safety locks.

The switch of the rechargeable battery with remote control is intended for disconnection of the battery from onboard network of the car (at the long parking, repair of electric equipment, and also at emergence of fire danger).

Prevention It is necessary to switch-off the rechargeable battery only after an engine stop. It is strictly forbidden to switch-off the battery at the working engine; otherwise the knots and devices incorporating electronic schemes can fail.

The switch of the rechargeable battery is installed under the pallet on which the battery is installed.

Fig. 3.1. Governing bodies

Control of the switch of the battery is exercised of the push-button switch 28 (see fig. 3.1) located under the dashboard.

It is possible to switch on and off the battery direct pressing the battery switch button closed by the rubber cap located at a switch end face.

If necessary to tighten nuts of fastening of tips of wires. In case of corrosion of nuts and washers of fastening of tips they need to be replaced. In case of a podgar of contacts to remove a plastic cover.