Quote:
Originally Posted by brucepick
In my design the LED is driven off the fan relay's trip circuit, so the LED never sees any voltage generated by a wind-driven fan. OTOH, if the fan power side of the circuit ever fails, the LED won't tell me.
If you run a bulb or LED off the fan's power circuit it might well light up if the fan spins due to air flow through the grill. I never tried it.
If you're an electrical noob and lost as far as relays, here are the basics:
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I recently installed an LED indicator in my 94 civic VX, I plugged the led directly into the fan relay in my fuse box. But I am definitely getting wind powered "light up". Even when the engine is cold. I tried plugging into the other prongs of the relay and the other 3 have constant power when the ignition is on? So please help! Any suggestions?
