Skip to main content

Electrical System Relays

Carrying the Electrical Load

Every motor vehicle today contains a multitude of electrical systems, some requiring more current than a switch or controller can manage without overloading the switch contacts. With the convenience of remote start engines, lighting and door lock controls, processors require relays to carry the load of these many features without damaging the fragile circuitry within the processor.

SYSTEM Summary

How Does a Relay Work?

Within each relay are at least two circuits: a controlled circuit and one or more load circuits.

The controlled circuit is a common electromagnetic device that requires low current to operate. When the mechanical switch or processor requires the circuit to operate, voltage is applied to the magnetic device, which will activate the relay contact and energize the load circuit.

The relay contact circuit, or the load circuit, can maintain a higher amperage for an extended period of time without damaging the control device.

Looking for something else?

Technical Support

Real Support. Right Now.

GoTech’s team of highly experienced technicians is ready and able to provide expert advice and resources for all your vehicle electronics needs.

Tech Training image in the Garage with video and car

About wells vehicle electronics

Almost 120 Years In The Making

Wells has been a leader in the auto industry for more than a century. Find out how we got here and what drives us today.

Old Image of Wells when on Brook St