How to Wire a 12V Relay?

Answer 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 »

Top Q&A For: How to Wire a 12V Relay

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 Power Relay?

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 »

How to Wire a Car Horn Relay?

A car horn relay is nothing more than a "remote light switch" from an electrical standpoint. The relay is normally open with power from the battery to the relay and from the relay to the horn. The ... 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 »