Anonymous Posted on Nov 15, 2009

I have a ford factory wiring plug with 5 wires, I

I have a ford factory wiring plug with 5 wires for electric tralior braking, I have purchased a electronic brake control with 4 wires. I have matched up 4 wires and have one left from the ford wiring system, which is brown and is label illumination feed, no idea what to splice it with?

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Anonymous

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Posted on Nov 16, 2009

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If you are talking about the trailer brake pigtail under the dash, the brown wire is for the illumination on the brake controller, if applicable.

I have a ford factory wiring plug with 5 wires, I - 0fa42f2.jpg

My reese hand held controller did not use this, so I just blind end tapped it into the harness.
If your brake controller does not have background illumination, then you don't need the brown wire.
Sounds like the controller is similar.

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Does the Ford FG come wired for electric brakes

If it is electric brakes you will have a switch in the dash or a module mounted to the bottom of the dash by the steering wheel. That plug could be just for trailer lights.

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Aug 07, 2016 • Ford Cars & Trucks

tip

Trailer Wiring Cheat Sheet

Hello all,

For those of you that have or occasionally borrow trailers and look at the wiring plugs with disdain (I mean face it they don't make sense, grd is white, +12vdc is black, etc), this is for you.

Plug Types/Application
7 Way - RV Trailers, Horse and Utility Trailers
6 Way - Horse, Stock and Utility
4 Way - Utility Trailers

Columns are: Color, Function, Mark on the plug.

Seven wire Trailer plugs:

Horse, stock or utility trailers:
White = Ground - 1
Blue = Electric Brakes - 2
Brown = Tail and clearance lights - 3
Black = Battery, aux power - 4
Yellow = Left turn/Brake - 5
Green = Right turn Brake - 6
Orange or Purple (not both) = Auxilliary or Reverse - 7

Recreational Vehicle:
White = Ground - 1
Blue = Electric Brakes - 2
Green = Tail and clearance lights - 3
Black = Battery, aux power - 4
Red = Left turn/Brake - 5
Brown = Right turn Brake - 6
Yellow = Auxilliary or Reverse - 7

Six wire trailer plugs:

Horse, stock or utility trailers:
White = Ground - GD
Yellow = Left turn/Brake -LT
Green = Right turn Brake -RT
Brown = Tail and clearance lights - TM
Red or Black (not both) = Battery, aux power - A
Blue = Electric Brakes - S

Recreational Vehicle: (color, use, plug mark)
White = Ground - GD
Brown = Right turn Brake - RT
Green = Tail and clearance lights -TM
Black = Battery, aux power - A
Red = Left turn/Brake - LT
Blue = Electric Brakes - S

Four wire plugs:
White = Ground
Yellow = Left turn/Brake
Green = Right turn Brake
Brown = Tail and clearance lights

Ground should be 10ga.
Others 14 ga

Best regards
Mike

Read full tip

on Sep 23, 2009 • 1998 Ford Explorer

tip

Trailer Wiring Standards (Color Codes/Plug Marks)

Hello all,

For those of you that have or occasionally borrow trailers and look at the wiring plugs with disdain (I mean face it they don't make sense, grd is white, +12vdc is black, etc), this is for you.

Plug Types/Application
7 Way - RV Trailers, Horse and Utility Trailers
6 Way - Horse, Stock and Utility
4 Way - Utility Trailers

Columns are Color, Function, Mark on the plug.

Seven wire Trailer plugs:

Horse, stock or utility trailers:
White = Ground - 1
Blue = Electric Brakes - 2
Brown = Tail and clearance lights - 3
Black = Battery, aux power - 4
Yellow = Left turn/Brake - 5
Green = Right turn Brake - 6
Orange or Purple (not both) = Auxilliary or Reverse - 7

Recreational Vehicle:
White = Ground - 1
Blue = Electric Brakes - 2
Green = Tail and clearance lights - 3
Black = Battery, aux power - 4
Red = Left turn/Brake - 5
Brown = Right turn Brake - 6
Yellow = Auxilliary or Reverse - 7

Six wire trailer plugs:

Horse, stock or utility trailers:
White = Ground - GD
Yellow = Left turn/Brake -LT
Green = Right turn Brake -RT
Brown = Tail and clearance lights - TM
Red or Black (not both) = Battery, aux power - A
Blue = Electric Brakes - S

Recreational Vehicle: (color, use, plug mark)
White = Ground - GD
Yellow = Not used -
Brown = Right turn Brake - RT
Green = Tail and clearance lights -TM
Black = Battery, aux power - A
Red = Left turn/Brake - LT
Blue = Electric Brakes - S

Four wire plugs:
White = Ground
Yellow = Left turn/Brake
Green = Right turn Brake
Brown = Tail and clearance lights

Ground should be 10ga.
Others 14 ga

Best regards
Mike

Read full tip

on Sep 09, 2009 • 1981 Ford F 150

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I have a 2005 ford f550 with factory brake controler & factory trailer wire plug. On the trailer wiring plug I am not getting power to the turn signals or brake lights. The turn signals and brake...

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Be the first to answer Nov 14, 2013 • 1997 Ford F150 Regular Cab

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I have a 2005 ford f550 with factory brake controler & factory trailer wire plug. On the trailer wiring plug I am not getting power to the turn signals or brake lights. The turn signals and brake...

There is a fuse box under the hood that has the fuses that control the wire harness. There are at least 2 boxes, mine were on the drivers side wheel well near the rear of the engine compartment.

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Nov 14, 2013 • 1997 Ford F150 Regular Cab

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I have no brake lights when i step on to brake. all running lamps turn and haz work also no brake coming from tow plug when tralior is hooked up.

There is a 'plunger' type switch under the dash near your brake pedal. It will be hard to see but look carefully along the shaft of the pedal. Once you find it, it is easily removed and replaced. Prior to removing it tho, check to make sure all the wires are hooked up tightly. If not, do so. That may be a fix. Other wise, replace the switch, and make a note how the wires are connected so you can re-instal it correctly. Double check your work.

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Feb 05, 2013 • 1999 GMC Suburban

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I am installing an electric trailer brake controller on my 2008 Ford F- 150 STX pick up truck and I need to know where it plugs in under the dash

Ford's factory supplied brake controller harness end can be found loosely stuffed under the dash, usually just above the driver's right leg. A Ford harness has a rectangular shaped connector.
Simply connect the brake controller harness connector into the vehicle connector. Zip tie the harness wires to another harness to prevent the wiring from hanging down near your feet.
I hope this helps.

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Jul 03, 2011 • Ford F-150 Cars & Trucks

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I have a 2001 F150 and am trying to find out where the factory installed plug in is for the brake controller wiring. I have the brake controller and the instructions say to read the truck owners manual...

Hi. There is a grey plug with 6 wires right behind your OBDII diagnostic port on the lower dash board above your accelerator pedal.

The color of the wires on the plug are blue, green, red, white and brown. The wires are as follows:
Blue....electric trailer brake feed
Green....brake pedal switch
Red...12v postitive...always hot
White....ground
Brown....interior vehicle illumination (not used)

The factory wire harness that you will need to attach your brake controller will plug right into this plug. The factory wires are colored the same as above.

After-market and brake conroller wires are colored as follows:
Blue....electric trailer brake feed
Red.....brake pedal switch
White....ground
Black....12v positive

Read full answer

Sep 01, 2010 • 2001 Ford F150 Styleside SuperCrew

3helpful

4answers

No trailer right turn signal or brake light

Hey Boon,

The pinouts for a 7-way plug are as follows:
Seven wire Trailer plugs:

Horse, stock or utility trailers:
White = Ground - 1
Blue = Electric Brakes - 2
Brown = Tail and clearance lights - 3
Black = Battery, aux power - 4
Yellow = Left turn/Brake - 5
Green = Right turn Brake - 6
Orange or Purple (not both) = Auxilliary or Reverse - 7

Recreational Vehicle:
White = Ground - 1
Blue = Electric Brakes - 2
Green = Tail and clearance lights - 3
Black = Battery, aux power - 4
Red = Left turn/Brake - 5
Brown = Right turn Brake - 6
Yellow = Auxilliary or Reverse - 7

In both cases 4 is battery and 7 is reverse, aux or not used.

Double check your wiring using these lists as a reference.

Click here for my post on Trailer wiring

This should get us closer to the answer.

Best regards,
Mike

Read full answer

Sep 08, 2009 • 2004 Dodge Ram 2500

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Wiring diagram for electric trailer plug at rear of 1995 ford f 150. I have the 4 plug wire and I want to connect to the 7. There is a blue wire for the electric brake a black with green line and a red...

yellow will be for a battery charge wire for the break away? read the plate on the plug , this is just a big 6 plug trailer plug but the put 1 in the center for back up lights.

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Jul 01, 2009 • 1995 Ford F150 Styleside Regular Cab

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