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Just bought a new trailer with electric brakes. 2003 F250…

Just bought a new trailer...
Just bought a new trailer with electric brakes.2003 F250 Crew 5.4L - have read trailer brakes don't work until over 10 miles per hour. If true have to test to see if they are working? If not how do I test? With key on, brakes pressed, no volts on the electric brakes pin.
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Answered in 7 minutes by:
10/15/2017
EricFromCT
EricFromCT, Ford Technician
Category: Ford
Satisfied Customers: 4,648
Experience: 20 years dealership exp., ASE A1-A9 L1 L2, Ford Lincoln Mercury Senior Master, Diesel Certified
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Hi. Welcome to chat! My name is ***** ***** I am currently a factory dealer auto mechanic. I will attempt to assist you with your concern today.

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Did you read the trailer brake controller information on how to set the gain on your controller?

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Customer reply replied 8 months ago
Maybe thats my problem... maybe I don't have a brake controller? A little box under the dash? I don't have that, does that mean I dont have electric brakes?

Yeah. You need a brake controller that you mount inside and plug into a harness thats already under the dash. Then you can set the brake gain and you know if the brakes are working or not.

Please note that customer satisfaction is my number one goal. Also we can respond in this chat back and forth many times. I may be offline when you respond but I will promptly reply when I return. Be sure to please take a quick moment and rate my assistance by clicking the stars above. Thank you for rating and for using Just Answer.

EricFromCT
EricFromCT, Ford Technician
Category: Ford
Satisfied Customers: 4,648
Experience: 20 years dealership exp., ASE A1-A9 L1 L2, Ford Lincoln Mercury Senior Master, Diesel Certified
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EricFromCT and 87 other Ford Specialists are ready to help you
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Customer reply replied 8 months ago
I need an after market device?

Yeah. From Napa or any part store. Also do yourself a favor and go to a dealer and buy the correct wiring harness to wire the controller up. It will plug right into the truck.

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Customer reply replied 8 months ago
I'll ask the ford parts guy for electric brake controller wiring harness?

Yes exactly.

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Customer reply replied 8 months ago
Thanks for your help!!!!!
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