How to Wire a Power Relay?

Answer It can be dangerous to try to directly actuate high-power electrical devices. However, many high-power circuits can be controlled by a low-power switch if the switch circuit is connected to a power... Read More »

Top Q&A For: How to Wire a Power Relay

How to Wire a 12V Relay?

Most 12 volt relays operate accessories in a motor vehicle. Applying a small amount, as low as .2 amps of current to the relay coil closes contacts to feed power to an accessory that requires more ... Read More »

How to Wire a Car Relay?

Adding aftermarket improvements to sound systems, headlights and other electrical accessories can seriously overload the wiring in a modern car. In the effort to improve fuel mileage automakers red... Read More »

How to Wire a 12Volt Relay?

A twelve-volt relay is often used in automotive applications. Automobiles contain several high-power devices--such as ignition control systems and high-intensity lamps--that would be dangerous or i... Read More »

How to Wire a 12-Volt Relay for a Fan?

Relays are used in many places in cars and trucks. Switching power to auxiliary lights is an example of this use. Using a relay allows you to run smaller wires through the vehicle, which is a consi... Read More »