2010 Mustang Switched 12V Power - Ford Mustang Forum
 
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post #1 of 3 (permalink) Old 05-16-2014 Thread Starter
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2010 Mustang Switched 12V Power

I am trying to make the 12V power in my armrest be switched. I have a 12V relay, expecting that I would be able to find a switched 12V wire.The relay is otherwise wired correctly, because the 12V port works through the relay if the relay is being energized by the constant 12V power line the port is usually wired to.

However, when I try to wire it to the ACC wire it's not working. It looks like that wire is only getting ~6V. I found what I think is the ignition wire, but that is only ~2V. I'm really not sure if I am getting at the right wires, none of the information I can find on the internet regarding wiring colors lines up perfectly with what I'm seeing.

Anything blatantly obvious I am doing wrong? Is there another wire in there that is actually switched 12V? I'm having trouble getting useful information from what wiring diagrams I can find.

Thanks for any help guys.

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post #2 of 3 (permalink) Old 05-21-2014
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Try testing the switched power wire that leads to your radio. It should be 12 volts. It has a delay, but will cut off when turn the car off and open your door. I used mine to activate relays for a fog lights harness and LED DLRs. Since it only activates the relay, there is no constant current draw. Try the Haynes Repair Manual for your model year. It has a complete wiring digram in the rear, and will tell you the color of the power wire.



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post #3 of 3 (permalink) Old 07-14-2014
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There is no acc wire at the radio. It turns on via a CANBUS signal. Go to the ignition harness at the steering column, or check the pass side kick behind the plastic kick panel. The retained acc wire for this car is located there and is a blue wire in the plug located right behind the kick panel. Test the wire with a multimeter to verify. also make sure you fuse your power sources to prevent and shorting/wire burning.
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