Hi Everyone,
I'm working on installing an LED indicator to tell me when the electric radiator fan is running on my 2012 corolla. I wanted to do this by running 12v wire to the radiator fan relay. The relay is a 4 pin micro relay like the one diagramed here (
12 Volt Car Relays Used In Automotive Industry).
Here's my problem: The 3w LED is powered and on when I connect it to pin 2, 3, and 5. However, the radiator fan is not running. 1 is the ground, so I wouldn't expect it to power the LED. According to the diagram I should be able to connect the LED to pin 5 which should be powered when the fan is switched on, right? With ignition on and accessory on pin 5 provides power to the LED even though the fan is not on.
Not sure what to do next.