12. Volt wire problems - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 04-11-2011
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12. Volt wire problems

I'm trying to add a 12v accessory to my 2009 ranger xlt. I need a 12v wire in which to hook up to that only has power when the key is in and on. I have tried both the radio constant power wire and accessory power wire but both are constant power. Please help!
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Old 04-12-2011
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do a barrel roll!


What wires are you tapping into? There is definitely key wires that are going to you radio and accessory....something doesn't seem right....
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Old 04-12-2011
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I've tried the 12v radio battery constant wire purple/red and the 12v radio accessory switched wire white/red. Both of them give me power even while the vehicle is off.
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Old 04-12-2011
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well thats interesting, but a cig lighter is powered all the time, and you could put it on a switch just hide it under the dash
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Old 04-12-2011
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Quote:
Originally Posted by Oxbox View Post
I've tried the 12v radio battery constant wire purple/red and the 12v radio accessory switched wire white/red. Both of them give me power even while the vehicle is off.
There is no white/red in the audio HU harness. Switched B+ is on the white w/blue stripe.
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Old 04-12-2011
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I will have to put it on a switch if I can't figure out a way to hook it so the power is controlled by the key. I used this wiring chart to look for the right wire.

2009 Ford Ranger Car Stereo Installation Guide
Car Radio Battery Constant 12v+ Wire: Violet/Red
Car Radio Accessory Switched 12v+ Wire: White/Red
Car Radio Ground Wire: Black/Yellow
Car Radio Illumination Wire: Blue/White
Car Stereo Dimmer Wire: Green/Red
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): White
Left Front Speaker Negative Wire (-): White/Brown
Right Front Speaker Positive Wire (+): White/Violet
Right Front Speaker Negative Wire (-): White/Orange
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): White/Orange
Left Rear Speaker Negative Wire (-): Brown/Yellow
Right Rear Speaker Positive Wire (+): Brown/White
Right Rear Speaker Negative Wire (-): Brown/Blue
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Old 04-12-2011
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Originally Posted by Oxbox View Post
I used this wiring chart to look for the right wire.
The info I gave on the white/blue is from Ford factory schematics.
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Old 04-12-2011
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What is the accessory you are trying to wire up? If its a high current demanding device you will probably want to use a relay that is switched by the key driven wire.
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