If a potential relay is malfunctioning, the compressor motor is in danger of not starting, stalling, locking rotor, or even burning out. That is why technicians should understand how to troubleshoot ...

Testing relays and their circuits in vehicles doesn’t always require a trip to the bench. With a few simple tools and knowledge, this video shows how to test relays directly in your car using a test ...

The fan center’s purpose is to control when the indoor fan turns on. Before the integrated gas control board, the indoor fan on gas and oil furnaces would either turn on at the same times as the heat ...

An attic fan is a great way to keep your home cooled off during the hot summer months. The attic fan works by removing the superheated air from your attic so the air in your entire home can ...

Burning down your dashboard does nothing for your reputation, not to mention your old Chevy, and connecting high-amperage cooling fans to an under-dash power source is asking for a meltdown. One ...

A relay mounted between the battery source and the fan will almost eliminate all current loss. No more ignition switch overheating and voltmeter fluctuations.

Faulty Fan Relay The cooling fan draws a low power and therefore comes with a relay. The relay is an electromagnetic switch that controls the power supply to the engine’s cooling fans. The relay is ...

Wondering how exactly you would wire an electric fan with a relay on your classic car or hot rod? Well, you came to the right place.