12v Switched Source At Rear Of Truck? - Ford Powerstroke Diesel Forum
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Old 06-17-2012, 07:26 PM
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12v Switched Source At Rear Of Truck?

In the process of installing an aftermarket reverse camera to go with my Kenwood head unit.

Anyone have any tips on where to find a 12v switched power source at the rear of the truck? Would really like to avoid having to run a power wire all the way back there if there's a 12v switched source somewhere back there.


I know I could wire it into the reverse lights back there and just have the camera power on when the reverse lights are triggered, but I'd like to if needed be able to wire the head unit up to show the camera feed even when not in reverse if possible on a switch, so in that situation I need just a normal 12v switched source.

Thanks in advance for any info.

Last edited by Hi-psi; 06-17-2012 at 07:30 PM.
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Old 06-17-2012, 07:35 PM
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The 7way plug has a switched charge line.
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Old 06-17-2012, 07:43 PM
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If you have the trailer tow package there should be a 12v charging circuit (charging for your trailer) in the 7 pin trailer plug that is only hot with the key in the run position. The logic was if you run down the battery in your trailer you won't run down the battery(s) in the truck. Some have a relay that has to be installed to activate the circuit. I had to install the relay in the 05, the 2000 came with in installed.
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Old 06-17-2012, 07:57 PM
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Cool, thanks for the quick replies. I'll check the plug tomorrow with a meter and see where that gets me.

Thanks!
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Old 06-18-2012, 05:35 PM
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Guess that's what I get for my first attempt being when it was getting dark the other day and not looking around enough. Took a look at the 7-way plug today and on the flip up cover it even tells you which terminals/wires are what with one clearly indicated as 12v +.

Tapped into that it it works perfect!

Thanks again.
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Old 06-23-2012, 07:56 AM
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A reverse camera is nice. I love the one I have, especialy when I have my 12ft box camper on. I wired the switch feed off of my licsene plate lights.
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