rmartingt
Well Known Member
I’m planning to install a “smoke on” indicator LED. I already have the LED itself; it’s a small 12V unit. My question is, can I simply wire this LED in parallel, or do I need a resistor to protect it?
I plan to wire the smoke system as follows:
Smoke arm switch “on” passes power to the input side of an automotive relay and a small jumper puts power to one side of the coil. Pressing the smoke switch on the stick grounds the relay, causing it to close and send power to the pump (which pulls about 7 amps, IIRC0.
My thought was to pick off either the ground side of the relay coil, or the output side of the relay, and use that to power the LED.
Will this work, or will I pop my LED?
I plan to wire the smoke system as follows:
Smoke arm switch “on” passes power to the input side of an automotive relay and a small jumper puts power to one side of the coil. Pressing the smoke switch on the stick grounds the relay, causing it to close and send power to the pump (which pulls about 7 amps, IIRC0.
My thought was to pick off either the ground side of the relay coil, or the output side of the relay, and use that to power the LED.
Will this work, or will I pop my LED?