How to connect the relay correctly?

If you need to replace the nominal relay with acar or install a new one, then you should familiarize yourself with the features of its connection. For example, to replace a standard car horn, you will need to change the relay through which it is connected. For most electrical equipment of the machine, conventional four-contact relays with standard marking are installed.

If you need to connect the headlights through the signaling or ignition, then you can use the standard scheme, which is offered by the car manufacturer.

How to properly connect the relay to the electrical system of the machine?

It is worth considering that to connect the consumerIt is necessary to use a thicker wire than the relay control input. In addition, a fuse must be placed on the consumer's wire, which will allow the power supply to be protected from voltage surges.

Relay connection process:

1. Connect the contact, which is numbered as "85" with a negative wire from the battery or mains (it can be connected to the car body);
2. On the contact under the number "86" connect "+" from the power button;
3. A positive wire from the consumer (signal or headlamp) is connected to the pin number "87";
4. To the contact number "30" is connected a positive wire from the battery or the electrical system of the car.

If you want to learn more about connecting wiring and lighting, see How to Connect the Light.