Advice 1: How to connect an external tachometer

Tachometer – an instrument that indicates the speed of the crankshaft of the engine. Can be installed on almost all modern models of cars. Well helps the driver to correctly operate the engine as the traction and power characteristics of it (engine) greatly depend on the speed of the crankshaft. In the absence of such a device panel, or malfunction of the regular tachometer to install and connect an external tachometer as the petrol and diesel engine.
How to connect an external tachometer
You will need
  • tachometer, electric car scheme, a set of wrenches and screwdrivers, wire, duct tape.
Instruction
1
The principle of operation of Electromechanical and electronic tachometers is that they read the number of pulses supplied to the ignition coil (petrol engines) or from terminal W alternator (diesel engines). The number of pulses coming from the output of the generator (at the same engine speed), about 6 times higher than the number of pulses supplied to the ignition coil. Therefore, acquiring the tachometer, be sure to ask the seller whether this device to work properly on your car. There are universal tachometers, in which a special switch that allows you to connect the device to different engines (diesel – petrol, 2, 4, 5, 6, 8 cylinders).
2
To connect the tachometer in the car with the ignition system, install and secure it to a convenient place on or near the dashboard. Negative terminal (black) connect to ground (the body) of the car. Plus power (red) connect to the terminal of the ignition switch where you receive 12 Volts when you turn on the ignition system. The third wire (tachometer input) connect to the terminal of the ignition coil, which is connected to the breaker points of the distributor (contact ignition system) or to switch (contactless ignition system). On many models of external tachometers provides illumination of the device in the dark. Connect the tach backlight to switch the dimensions of the car.
3
In a vehicle with a diesel engine, connect the input wire of the tachometer to terminal "W" of the generator. If such terminals have no your generator, take her well-insulated wire. To do this, remove and disassemble the alternator. Moving away from the winding three wires to the built-in generator rectifier. Connect to any of the three wires and neatly print the wire out. Assemble the generator, ensure the cable does not touch moving parts.

Advice 2: How to connect a tachometer in motorcycle

Tachometer brand TX-193 from the VAZ-2106 vehicle best suited for installation on domestic motorcycles due to its precision, small size, low weight, low energy consumption and suitability to work in conditions of shaking and vibration. Moreover, this model tachometer features low cost in comparison with the specialized motorcycle tachometers.
How to connect a tachometer in motorcycle
You will need
  • - tachometer th-193 from the VAZ-2106.
Instruction
1
Connecting the Rev counter on a two stroke twin cylinder motorcycle equipped with an electric starter, a battery and a single-channel electronic ignition system with doohickery ignition coil, fundamentally no different from the regular connection on the car VAZ-2106. The input of the tachometer connect the output of the primary winding of the high voltage ignition coil and the power plug from the battery with the plus and minus wires. At the positive wire move the switch to off in the Parking lot discharged battery. If the motorcycle is imported, and power to the tachometer plug via the ignition switch. It should have appropriate contacts to connect additional devices.
2
If a two-cylinder two-stroke motorcycle with a single-channel ignition does not have electric start, to the output of the rectifier connect to the battery and from the battery, connect the power to the tachometer through the switch. If the motorcycle does not have a rectifier, equip it to them. For this, you should buy any design of motorcycle rectifier.
3
If the motorcycle is not equipped with a battery (moped, the old model of the motorcycle, install the battery. In the simplest variant, select the battery from the uninterruptible power supply, battery lamp or a small otoacoustic. Connect the tachometer without battery directly from the generator coil will cause the output of the tachometer failure. It will have to collect yourself or request a friend radio Amateur thyristor voltage regulator with parallel connection of thyristors.
4
To connect a tachometer for twin cylinder motorcycle dual ignition, provide power to the tachometer voltage using the voltage regulator provide the supply to the input of the tachometer pulses from both cylinders. For the latter duplicate the input circuit of the tachometer by drilling a hole in the rear of the device. Through the hole use a complementary log on to the screw with the wire.
5
Connect the tachometer to the three-cylinder bike do the same as connecting on a two-cylinder motorcycle dual ignition. Ignition system three-cylinder motors, as a rule, three-channel. Feed the input of the tachometer pulses from any two of the ignition coils of the three. The intervals of the pulses will be uneven, but the measurement accuracy is not affected. You can connect the tachometer to the four - or six-cylinder motorcycle, but this motorcycle is the best option installing original tachometer for that engine.
6
Difficult to connect the tachometer to a single cylinder motorcycle. To do this, disassemble tachometer, extract the electrical circuit and set the resistor R7 to increase the sensitivity of the device. If the adjustment is not enough, increase by half the capacitance of the capacitor C5 and try to re-adjust the resistor, comparing the indications of the tachometer th-193 with the readings of the reference tachometer.

Advice 3: How to connect a tachometer on the injector

The tachometer is one of the most important devices in the car. It allows you to constantly monitor the rpm level. However, not every configuration is a regular tachometer. So many motorists raises the question of how to connect this device to a fuel-injected engine.
How to connect a tachometer on the injector
You will need
  • - remote tachometer;
  • - new instrument panel with integrated tachometer;
  • - a set of tools;
  • - soldering iron;
  • - cotton gloves.
Instruction
1
Study guide for the repair and maintenance of your car. There you can find instructions for installing and removing standard tachometer on injection model of your car.
2
Find out if a regular dashboard with a tachometer on your car. If any, the most perfect and easiest option is to purchase and install such a Board in place of the one that is installed in your machine now.
3
To install a new dashboard with a built-in tachometer is needed to produce partial or complete disassembly of the torpedo. Each model car has its own characteristics when removing the Board. On some machines it is necessary to detach the whole of the torpedo, and the other just enough to remove the protective visor over the instrument Board, Unscrew the screws fixing the fasteners.
4
To connect a new dashboard required by the scheme, which is depicted in the attached instructions. Don't forget before installing, remove the "minus" terminal from the battery.
5
Purchase and install an external tachometer, powered from the cigarette lighter. Such a device allows you to measure the number of revolutions for changing the current in the onboard power supply system. Remote tachometer, powered from the cigarette lighter is very convenient as it requires for the installation a minimum of effort.
6
However, it does have a small negative error in the measurement. This is due to the fact that each metal its resistance.
7
Connect the tachometer directly to the wires of the cigarette lighter, if you want to achieve the minimum error. To do this, pull out the cigarette lighter socket from the connector and solder the wires from the tach wire coming from the power supply system of the car, observing the coincidence in color.
8
For the most accurate measurement of engine rpm, connect a portable tachometer to the ignition coil. Remove the protective cover from the steering column and locate the bundle of wires. Among them, separate those wires that go to the coil. There should be four. One solder on the "plus" and the rest in accordance with the color of the wire.
9
Contact customer service if you are not confident in their abilities. Install only the model of tachometer, which is recommended for use on your car. Using third-party devices in the best case will lead to incorrect system performance.
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