How to properly light a car from another car
Content
Most drivers know that if the battery is empty, you can start the car from the battery of another car. This process is popularly called lighting. There are certain nuances, the observance of which will help to quickly cope with the problem that has arisen and at the same time not ruin both cars.
What is the difficulty of lighting a cigarette from another car
Usually the question of how to start a car when the battery is dead arises in winter. This is due to the fact that in cold weather the battery discharges faster, but such a problem can occur at any time of the year when the battery does not hold a charge well. Experienced car enthusiasts believe that lighting a car from another car is a simple operation, but this is not entirely true, there are some peculiarities here. Beginners need to know the nuances that will allow you to start a car without harming both cars.
Before lighting a car from another car, the following nuances must be taken into account:
- The car to be started must be in good working order. This requirement applies to the engine, battery and electrical wiring. You can light the car only when the battery runs out due to a long parking of the car, or if the headlights were on when the engine was not working, other consumers of electricity were turned on. In the event that the battery is discharged during attempts to start the engine or the car does not start due to malfunctions of the fuel system, you must not light the light.
- Both cars should be approximately the same in terms of engine size and battery capacity. A certain amount of current is required to start the motor. If you light up a large car from a small car, then, most likely, nothing will work. In addition, you can also plant a donor battery, then both cars will have a problem with starting.
Both cars should be approximately the same in terms of engine size and battery capacity. - It must be taken into account whether a diesel car or a gasoline one. To start a diesel engine, a much higher starting current is required. This must be taken into account in winter. In such a situation, lighting a diesel engine from a gasoline car may be ineffective.
- You cannot turn on the starter of a discharged car when the donor engine is running. This is due to the difference in the power of the generators. If earlier there was no such problem, since all cars were almost the same, now the power of the generators of modern cars can be noticeably different. In addition, there is a lot of electronics in the design of a car, and if the donor works during lighting, a voltage surge may occur. This will blow fuses or damage the electronics.
More about engine malfunctions: https://bumper.guru/klassicheskie-modeli-vaz/poleznoe/ne-zavoditsya-vaz-2106.html
In modern cars, it is often difficult to get to the battery, so the manufacturer has a positive terminal in a convenient place, to which the jump wire is connected.
How to properly light a car
There are several signs that indicate that the battery in the car is dead:
- when turning the key in the ignition lock, the starter does not turn the engine or does it very slowly;
- the indicator lights are very weak or do not work at all;
- when the ignition is turned on, only clicks or crackling is heard under the hood.
Read about the VAZ-2107 starter device: https://bumper.guru/klassicheskie-modeli-vaz/elektrooborudovanie/starter-vaz-2107.html
What you need to light a car
Each car must have a lighting kit. You can buy it or make it yourself. Don't buy the cheapest jump leads. When choosing a starter kit, you should pay attention to the following parameters:
- length of wires, usually 2-3 m is enough;
- the maximum starting current for which they are designed. It depends on the cross-section of the wire, which should not be less than 16 mm, that is, the cable cannot have a diameter less than 5 mm;
- quality of wires and insulation. It is best to use copper wires. Although aluminum has less resistivity, it melts faster and is more brittle. No aluminum is used in high-quality factory starting wires. The insulation should be soft and durable so as not to crack in the cold;The starting wire must have a copper core
- the quality of the terminals. They can be made from bronze, steel, copper or brass. Copper or brass terminals are the best. An inexpensive and high quality option would be steel clamps with copper teeth. All steel clamps oxidize quickly, while bronze clamps are not very strong.An inexpensive and high-quality option would be a steel clamp with copper teeth
Some models of starting wires have a diagnostic module in their kit. Its presence is important for the donor. Such a module allows you to control the parameters of the battery before and during the lighting of another car.
If you wish, you can make the wires for lighting yourself. To do this, you will need:
- two pieces of copper wire with a cross section of 25 mm2 and a length of about 2–3 m. They must necessarily have high-quality insulation and different colors;It is necessary to take starting wires with a cross section of 25 mm2 and with insulation of different colors
- a soldering iron with a power of at least 60 W;
- solder;
- nippers;
- passages;
- knife;
- cambric or heat shrink. They are used to insulate the connection between the wire and the clamp;
- 4 powerful crocodile clips.Crocodile clips must be powerful
Details about the electrical equipment of the VAZ-2107: https://bumper.guru/klassicheskie-modeli-vaz/elektrooborudovanie/elektroshema-vaz-2107.html
Manufacturing process:
- Insulation is removed from the ends of the prepared wires at a distance of 1–2 cm.Remove the insulation from the ends of the wires
- Tin the wires and the ends of the clips.
- Clamps are fastened, and then the attachment point is soldered.If the ends of the terminals are only crimped and not soldered, then the wire will heat up in this place
The procedure for lighting a car
In order to properly light the car and not harm any other car, you must act in the following sequence:
- The donor car is adjusted. You need to drive as close as possible so that the length of the starting wires is enough.You need to drive up close so that the length of the starting wires is enough
- All consumers of electricity are turned off. This must be done on both cars so that energy is spent only on starting the engine.
- The donor's engine must be shut off.
- Wires are connected. First, connect the positive terminals of both batteries together. The minus of the donor is connected to the mass of the car (any part of the body or engine, but not the carburetor, fuel pump or other elements of the fuel system), which is lit. This area should be unpainted to ensure good contact.The connection point of the negative wire must be unpainted to ensure good contact.
- The donor engine is started and let it run for 5–10 minutes. Then we turn off the engine, turn off the ignition and start the second car. Many people think that the donor machine can be left on, but we do not recommend doing this, because there is a risk of damaging the electronics of the machines.
- Terminals are disconnected. Do it in reverse order. A started and now recharged car must run for at least 10–20 minutes for the battery to recharge. Ideally, you also need to drive a little car and fully charge the battery.
If after several attempts to start the engine it was not possible, you need to start the donor so that it works for 10-15 minutes, and its battery is charged. After that, the donor is muffled and try again. If there is no result, you need to look for another reason why the engine will not start.
Video: how to properly light a car
Correct connection sequence
Particular attention should be paid to the sequence of connecting the starting wires. If everything is simple with the connection of the positive wires, then the negative wires must be connected correctly.
You cannot connect two negative terminals to each other, this is due to the following reasons:
- if the discharged battery is faulty (closed), the current will flow to it with little resistance, this will give time to assess the situation and disconnect the donor;
- during start-up, large currents are generated and flammable gas is emitted from the battery. Since there will be no source of sparks nearby, the likelihood of its ignition is minimized;
- first connect the positive terminals, therefore, if you touch it carelessly, the possibility of a short circuit is excluded.
When connecting wires, you must be very careful and do everything right. Misconceptions can cause fuses or electrical devices to fail, and sometimes a car fire.
Video: wire connection sequence
Driving stories
I come to the parking lot on Friday to pick up my car, and the battery is dead on it. Well, I'm a simple village guy, with two back-biters in my hands, I go to a bus stop where taxis usually stand and give out the text: “The battery has run out, there is a parking lot, here is 30 UAH. Help out. “I interviewed about 8–10 people, including ordinary drivers who came to the market for shopping. Everyone makes sour faces, mumbles something about some kind of computers, lack of time and “my battery is dead”.
When I was driving with a planted Akum, I forgot to turn off the light and it died in 15 minutes — so the experience in asking “give me a light” is huge. I will say that turning to taxis is to spoil your nerves. Such stupid excuses are molded. The battery is weak. What does the battery have to do with it if the cigarette lighter is on. About the fact that the computer on the Zhiguli will fly in general whinnying ...
A good "cigarette lighter", with good wires and pliers, is generally problematic to find. 99% of what is sold is frank Ge!
My cigarette lighter is made from KG-25. Length 4m each wire. Lights up just with a bang! Do not compare with Taiwanese shit in 6 square meters. mm, on which 300 A is written. By the way, KG does not harden even in the cold.
You can light a cigarette, but you MUST STOP YOUR CAR, and let it start until your battery runs out. :-) Of course, for charging, you can make the car work, but when you try to start, be sure to turn it off, otherwise you can burn the computer, be careful.
I always light a cigarette for free, except for orders, and when people throw money into the car with an offended face ... Because the road is the road and everyone on it is equal!
The car can only be lit when the battery charge is insufficient to start the engine. If the lighting fixtures are working fine and the car won't start, then the problem is not in the battery and you need to look for another reason.
