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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Brake Controller.

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Old Jan 20, 2019 | 01:25 PM
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PRIMERED79 SHORT BED
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Laughing Gas
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Brake Controller.

On my 92 f150 I have a small square plug under the center of my dash that would be used for a brake controller.
When I buy a new controller, will it be plug and play or will I need to add some more wires to make it work?

I ask because my 7 prong rv plug has nothing to tap into in the rear of the truck, I have the standard wires plugged in for brake,turn, lights hooked up, but nothing for 12+ or power for trailer brakes.



 
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Old Jan 20, 2019 | 03:52 PM
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You can buy an adapter that plugs in to it. Tekonsha 3035s will work. At the rear of the truck should be a pigtail close to the connectors at the rear of the frame with 3 wires in it, a large blue, and orange. The blue should go to the connector under your dash, splice in and run to the 7 way plug. The orange is 12v batt for charge wire
 
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Old Jan 20, 2019 | 04:10 PM
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PRIMERED79 SHORT BED
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Laughing Gas
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I used the adapter plug for the rv plug for the turns,brake,lights and hooked it to the factory plug at the end of the bed.
I didn't notice a plug with the blue,orange,white? wires, would you have a pic handy of its location and what it looks like?
 
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Old Jan 21, 2019 | 04:11 PM
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Sorry no pic, cut it off my truck to wire to RV plug. If it's not at end of frame on passenger side it may have a connector on drivers side inner front fender that would run to back of truck. Use a voltmeter to verify, that's how I found the correct plug.
 
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Old Feb 5, 2019 | 07:37 PM
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Laughing Gas
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This is one other plug I have at the rear of the truck, it has two wires, one black and one brown, is that related to the trailer brakes?
 
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