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Simple car control from coins, bulbs and wires

checking car controls

Malfunctioning car electrics is difficult to detect without the use of electrical testers. The simplest of them is a control light or, in other words, a control. If a breakdown occurred on the way and there are no special electrical measuring instruments in the travel set of car tools, then the simplest auto-control can be made from objects that any driver is always at hand with.

You will need:
1. Light bulb removed from the front turn signal or rear light.
2. A segment of a two-wire wire (you can borrow it from the car speaker wires).
3. Adhesive tape, electrical tape or adhesive patch from a first aid kit (whatever is found).
4. Coin.
what is needed

The car indicator light from this set of items is made as follows:

Preparation of blanks for the manufacture of car controls
1. The cores of the wire are separated from each other.
the wire is divided into veins

2. They clean the end of one of the cores from the insulation by about 1 cm and tightly twist its wiring to each other. This end will serve as the first contact probe of the future control.
first probe auto control

3. Remove insulation from the second end of the core 3-4 cm long, also twist its wires together, and then collect the twist into a “lump”.
the end of the wire to connect to the bulb

4. Attach, the end of the core, twisted "lump", to the coin, tightly wrapping them with several layers of adhesive tape. The result is a blank of one of the control wires.
put the end of the wire to the coin

wrap a coin and wire with tape

second probe auto control

5. From one of the ends of the second core of the cut wire, they also remove insulation by approximately 1 cm, and make rigid straight twisting of its wires. This end will be the second control probe.
divide the wires of the second end of the core into parts

6. The other end of the core is also cleaned from insulation by 5-6 cm and its bare wires are divided into two equal parts,
braid them

each of which is twisted into “pigtails”.
intertwine braids

7. Having twisted the “pigtails” made between themselves by one or two turns, they are fixed on the lamp base. To do this, the base is covered with “pigtails” on both sides, and then their ends are twisted together.

fasten the wiring to the bulb base

It turns out the workpiece of the second control wire with a bulb attached to it.
second blank auto control

Auto control assembly
1. A small section in the center of the coin on the first blank is cleaned of tape with a knife tip or other sharp object.
clear coin area

2. Apply the light bulb of the second blank to the cleaned area of ​​the coin and attach the lamp to the coin with tape.
attach the light bulb to the coin with tape

3. Fasten with tape the wire wrapped around the base of the bulb.
fasten the wire to the base

4. Fix all the parts of the assembled control tape with adhesive tape.
fix all parts of the control

The result is a device with two probes and a light bulb, which can be used to test sections of the car’s electrical network. For example, check for voltage at the battery terminals.
ready-made auto control

checking car controls


It is only important to remember that various electronic blocks and devices of a car with such a device equipped with a filament cannot be checked. To do this, use a multimeter and an LED lamp.

A detailed video on how to make the simplest auto-control without leaving your car
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1 a comment
If only the coin did not warp.

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