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For a 2005 Nissan Altima Hazard Switch, there are 4 wires, red/blue, Ground, 12V, and a red/orange Wire. Does anyone know what these wires are for?
When I use a volt meter and send power to the green wire the hazards flash but when I give power to the other red wires nothing happens.

Hand Motor vehicle White Automotive lighting Light
 

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Red/Blue is 12V for the backlighting, Red/Yellow provides ground through the Dimmer Control. Black is hard ground. Green/Red is a pulled-up signal wire to the BCM, grounding it should turn the Hazards on. The switch connects Green/Red to Black internally. I hope you didn't blow anything up by applying 12V to it.
 

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A good rule-of-thumb to follow is never apply 12V or run a continuity test, which is also applying 12V, to an unknown wire; in particular to wires where a module is supplying a ground; a good way to pop a transistor. To run a continuity test, always disconnect the wire at it's source. Make use of a wiring diagram where possible.
 
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