Question about Ford E350

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What color are the wires for trailer brakes on a 2004 Ford E350 and where are they located

Trailer brake wire to connect to the trailer. What color is it and where is it located after the fuse/breaker box

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  • Ford Master
  • 42,561 Answers

Trailer brake wires are normally piggybacked from the rear tail lights. Check either side and look for extra wires at a light assembly

Posted on Nov 07, 2014

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Trailer wiring 7 way

dO NOT SPLICE WIRES.. You bought a 45000 dollar truck, spring for a wiring T --25 bucks.. ( plugs between main harness and Tail lights.. ) --Available at most good auto parts.. Painless wiring also has a kit.

If you did already cut or splice into your wires, take that **** loose.. Shrink wrap the dammage.. Silicone over srink wrap.. Wire will corrode.. if you did manage to get spliced wires to work,-- in a few years or sooner you will have issues with the connections..Can you say short circuit.. Moisture and loose connections are a thing of the past with sealed tap in wiring.. Plug and play..

If any of this is over your head, get a friend who knows, or a tech to help.. Don't jerry rig a 45,000 dollar new Truck.. Come ON..!!!!!

Posted on Sep 18, 2008

farroutideas
  • 78 Answers

SOURCE: wiring diagram or fuse box diagram-2007 GMC Envoy Denali

Hi there;

Here is the wiring diagram for the trailer wiring for your truck.
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Hope this helps
Farrout!

Posted on Mar 18, 2009

  • 1779 Answers

SOURCE: Looking for a wiring diagram for a 2006 Ford Expedition

7way- black is 12volt (power), brown, running lights, yellow is left turn signal and stop light, green is right turn signal and stop light, white is ground, blue is brakes, and orange is aux power (can be back up lights, if trailer equipped w/ them). 6way is the same, minus orange wire. I have run into some variations to the above color codes (brown, yellow and green only-sometimes these 3 are different than stated, but only mixed as that group, as to what they control- example would be green is running lights, brown and yellow are turn signal and stop lights, the others should be as stated), if you have any trouble with things not working properly, it may be due to these variations, although the above are pretty standard. If you have an ohm meter you can check as you go (check for power at black wire- should be constant 12v, turn on turn signal and check for power-it will fluctuate from approx. 12 volts to 0 volts as the signal power pulses in the wire) hit the brakes, blue wire should show power, etc. Let me know if you need more help as you go.

Posted on Apr 11, 2009

  • 2 Answers

SOURCE: Right side trailer brake light does not work

Did yo check the fuse panel inside the truck its located on the drivers side dash , you have to open the driver side door, in there is a 10 amp fuse that is linked to rt trailer brakes and rt turn signal for the trailer, if the fuse is good there is a black box under the dash located on the floor on the driver side, just to the left of the break, thats where must of the plug in wire harness is for the trailer breaks!

Posted on Jun 10, 2009

  • 1509 Answers

SOURCE: no left turn/brake light on trailer

The ford f250 has a saparate fuse panel for the trailor lights if using the ford wiring connectors and no ( aftermarket parts ) The stock fuse panel has the relays and fuses in a separate fuse panel near the brake master cylinder. The main power for the trailor brakes( If it has them) comes off the power distrbution box just to the left of the brake pedal hi on the firewall in the floorpan. The most likly cause after the fuses test good is the trailor itself. The flat four wire connector is easy to test with 12 volts ( jump box, Car battery, Battery charger, jumper cables) connect the grond ( negitive to the ground ( toung, or white wire in the plug ) Its the one thats different or oppisit the others. touch the positive to each one of the other wires one at a time to see if the lights come on. green is left turn and stop yellow is right turn and stop and brown is running lights.as long as the connections don't make a strong spark and the lights come on like described then the problem can be in the truck. The trailor doesnt light though and doesnt spark hard while test the lights and one wire doesnt light something leave it connected and start at the bulb and work forward bcak to the connector with a test light ( an ice pick device with a light bulb and a ground wire with an allagator clip to hook to ground.) Tes a good wire first to be sure the light is working and the ground your using is a good one. with say the running lights on remove the bulb and probe the socket base at the bulb base connectors and see the light work the other connector will be the brake turn light. Change to the wire at the connector that runs the light to be tested and see if it lights the test light. if not trace the wire to the front of the trailor or just run a new wire from the connector al the way to the light base. If this proves to be too much troble (hard to trace all the wires appear old and crodded, just dept store, or discount auto parts store buy a universal trailor lighting kit its all wired up and ready to go for less than $40 Has the wire and the two lights, install the lights and thread the wire, plug in and your done! Again if the truck is bad make sure the regular lights work right first. then again with the test light grounded test all the plugs wires at the plug with the tailor disconnectedand with the hazard flashers on and the parkings lights on all wires should light the test light except the white grond and it shouldn't even light dimmly. if it does repair where it connects to the frame of the truck . most problems when you find them on a system that used to work OK are crodded connections and broken wires always cheack the bulbs and replace regularly with new ones as trailors carrode and bounce and pound mre than the truck and heavy dudy bulbs should be used most common are the 1157 that can be upgraded to the 2057 fit the same and sometimes even cost the same. If you think your going to do this alot 10 blub packages of bulbs cost about the same as 2 bubble pacs of two blubs or 6 blubs for free. Brand name bulbs last longer and fail for vibration less than the never heard of bulbs that all of the stores are selling now. Wagner GE Sylviania and others you reconize may save you more than a traffic stop. they may unknowingly save you from the jeporardly that the policeman in the long run is trying to save you from. They got their job to do, we hired em, lets not have them work on us the other guy will be fine. The truck follow the dead wire that should be on to the front of the truck or find it at the front of the truck turned on and cut it install a new wire to the rear of the truck cut the wire near the connector and connect your new wire. If you would like the connection to last solder and heat shrink are best, crimp connections work and are faster but need to be crimped with the right tool again if you expect to do this kind of repair very often the more expensive tools do abetter job The connectors can be bought as heat shrink and are best sealed with a heat gun ( an extra hot blow drier for hair ) A lighter or a propane torch works but working with fire is just that you know who you are that can control this kind of work if you drop things and can't get the keys into the locks in your daily life on the first try don't use flame. Tape will work but seems to never last very long again the brand name tape the costs so muck you can't beleive it the cme from the name brand auto parts store and is their Hi dollar choice you may do just fine carefully installed on clean wire and connectors. Even well done tapedd connections seem to fail in around a year. A seasoned mechanic in a pro shop is likly to use the right techniques and is going to charge for his time but may save you big money down the road as the wiring will stay good and the accidents caused by lights not working right and major wiring fires that require major harness repairs can be avoided. Most vehicals don't have wire harnesses made as replacement parts so if you need on the manufacturer may make you one but they will make you wait awhile and they'll get way deep in your pocket or credit card account at the pay window to the point you may have to call the bank to see why not. Were Talking over $1000 for a part harness there can be as many as three or four for some cars imports can be as few as one and you better believe that some older vehicals are totalled easyly by needing the whole harness and paying to have it installed. Figure $1000 install fee I've been the man hired more than once. even at the dealers I've worked at. The boss treats me real nice when the job is going. as the customers money burns down hardest of any job going in the shop. Don't burn one if you can help it. Always be ready to disconnect the battery and try it before you get going. even a helper to disconnect as soon as troble shows is best. Thats all the helper is allowed to do too! Have fun anything can be fixed with money just your persoal saftey can be way out there in the area where money can't buy. Be careful and take you time working on live circuits. 12 volts won't get you but the hybride cars and spark systems have the power to kill you and most of the circuits are marked. If in dought have a pro do it and consider the money well spent.

Posted on Aug 11, 2009

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1 Answer

Wire trailer brake controler on ford pickup


There usually is an open harness plug under the dash. When you buy a brake controller, the instructions should come with it. The better units will have a pigtail which will plug right into the other half of the open harness plug.

If the kit you have has the pigtail connector, but loose wires needing to be connected, see if the color of the wires match those on the open connector. Then match the color of each wire.

Some years of trucks will have a heavy duty flasher to install in the Powerbox to accommodate the extra trailer lights.

Mar 02, 2015 | Ford Cars & Trucks

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, ground is white, +12vdc is black, etc), this is for you.

This will show you how to wire trailers with seven, six and four pin connectors

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 (Large trailers with a battery and electric brakes):

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

on Sep 09, 2009 | 2004 Dodge Ram 2500

2 Answers

All trailer lights work on my travel trailer except there are no brake lights to trailer. The issue I can see is there is no power to the brakes at the 3:00 o'clock and 9:00 o'clock pins on my 2004 g


there will be only 1 power wire for the brake lights as they are connected .together. What you are looking at are the indicator lights (1 left wire and 1 right wire)

Mar 28, 2014 | 2004 GMC Yukon XL

1 Answer

I need a wiring diagram to install, hard wire a brake controller Ford 1991 E350 van. Where to start looking for wires in cab area?


It all depends on the instructions that come with your brake controller. In 1991, the wiring diagrams published by the manufacturer were not real good at indicating locations of things. For most brake controllers, you only need to use the output side of the brake lamp switch, a direct battery positive circuit (Which would be best to run directly to the battery with an inline fuse), an "ignition" hot wire (which there is probably a connector in the underdash fuse block that is marked "fused Ignition" - there should be one right next to fuse # 14). And the wire that must be run to the back of the vehicle to the trailer connector.
It is really very simple and you should not need wiring diagrams to figure it out...just the instructions with your controller.

May 18, 2012 | 2004 Ford E-350 Super

1 Answer

I have a 2004 Ford Escape. I installed a class 2 Reese hitch and wired the trailer light harness from the rear lights. All my lights work on the trailer except the break lights. Do I have to wire the...


you should'nt have to,all you need to do is to run a wire from one brake light to the plug if your brake light is a two filament globe ie. tail/stop light you need to make sure that you connect to the brake light wire.....hope this helps....cheers

Aug 09, 2010 | 2004 Ford Escape

1 Answer

95 ford f250 trailer wiring trouble what does each wire work and what color


The basic 4-flat trailer wiring colors are as follows.
Yellow-Left turn/Stop, Green- Right turn/Stop, Brown-Running Lights and White-Ground
7-way trailer wiring colors are as follows.
Yellow-Left turn/Stop, Green- Right turn/Stop, Brown-Running Lights, White-Ground, Red or Black-auxiliary power, Blue-Trailer Brakes and Purple-Reverse lights

Jan 15, 2010 | 1995 Ford F250

2 Answers

Right side trailer brake light does not work


Did yo check the fuse panel inside the truck its located on the drivers side dash , you have to open the driver side door, in there is a 10 amp fuse that is linked to rt trailer brakes and rt turn signal for the trailer, if the fuse is good there is a black box under the dash located on the floor on the driver side, just to the left of the break, thats where must of the plug in wire harness is for the trailer breaks!

May 31, 2009 | 2005 Chevrolet Silverado

1 Answer

Trying to connect a teekonsha voyager brake control to a 2003 expedition


Their should be a 6 pin conector that only 4 pins are used somtimes a 5th wire is installed for illumination, don't worrie about using that one. The connector is located in one or two different spots, the most popular place is under the dash on the drivers side just below the steering column the connector is grey. The colors are black or red / blue / green / white and sometimes a small black or brown wire is for illumination, don't worrie about that wire. Their are wiring harnasses for sell to hook the brake control through the conector, but if you do not want to buy an adapter hook the wires as followed: Vehicle Brake Control
Black or Red Black
Blue Blue
Green Red
White White
Black is power in to the brake control
Blue is the trailer brake feed
Green is brake signal
White is Ground for the brake control

May 31, 2009 | 2003 Ford Expedition

1 Answer

Tow plug


I take it the blinkers and brake lights work ok when not hooked up to the trailer? If yes, then the wiring to the tow hitch is not hooked up correctly. How many wires to trailer pig tail connection? U can have up to 7 depending on what you tow. Check to make sure these wires are hooked up from the truck to tow plug correctly: 7 wired---
brown-Rt turn and brake light, yellow-backup, white-ground, blue-electric brake, green-tail running lights, black-battery charger, red-left turn signal and brake light. Let me know if u have something other than 7 wire, I'll get the wiring color and source info for u.



Nov 25, 2008 | 1998 Ford F150 Regular Cab

2 Answers

Trailer wiring


you have to purchase a converter box with 5 wires, red, yellow, green and brown. this is because your turn signal is seperate from you parking and brake light bulb. you have to wire it straight in behind the connector.your basically converting two wires ( brakes and parking) to one wire (tailights) 5 wire to 4 wire.

Jul 12, 2008 | 2004 Ford Escape

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