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Old 08-11-2007, 05:46 PM
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LEDs on - help with the diagram

Hi guys,

I copied the setup off this site:
http://www.xious.com/camaro/install-fanswitch.html

I need your help to figure out why both of my LEDs stay lid up even with the key off. The car is 1998 Camaro Z28.

My DPDT switch works fine turning the low and high speed fans. However, when the engine is running, none of the LEDs work. If I turn the engine off, the LEDs turn on! I close the doors, turn the alarm on, the 2 LEDS still stay up. What am I doing wrong here? Is there a problem with the wiring diagram?

I am using 2 510 ohm resistors in line with 2 2.4-3V LEDs feeding the low/high PCM wires (blue and green in this case). The positive feed is a switched one (accessory fuse).

The whole point of doing this is to manually turn the fans on in stop and go traffic. The factory PCM turns them on around 230F. I can give up on this LED BS, but I am afraid that if I forget to turn off the fans manually, I will drain my battery. At least, there are going to be some warning lights.

I'd really appreciate your input.

Thanks,
Den

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Old 08-11-2007, 06:55 PM
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Ok, the problem is fixed. Stupid me - these LEDs have a positive side as it turns out. Now after wiring it _correctly_ everything works great.
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