#1086, "RE: fan light pulsing only reading ~2volts on the fan output wire" In response to In response to 1 Jul-13-05 12:37 PM by XtremeRS
By looking at it, you should be able to remove the LED, and use the negative hole of LED 18, for the fan relay's negative terminal, and then just connect the relay's positive terminal to 12volts, and that should work. The resistor and small transistor needed to drive a relay, are already there, so this should work. There is a positive voltage signal from the processor, goes through the input resistor, which switches a ground, on and off, using the 2n222 transistor. That transistor is what will switch ground to your 12 volt relay. Make sense?
The diagram is at the bottom of the page. Notice on the MS board by each LED, you will see that 1k resistor, and 2n2222 transistor already there on the board.
