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Expert Answers about Ford Wiring


  • 7-Way and Brake Controller Install Recommendation for a 2011 Ford F-350
  • A 7-way for trailer wiring will have the blinker and stoplights on the same circuit. I attached a picture that has a diagram that shows all of the circuits that a 7-way has. To install a brake controller like the part # 90885 in the truck you will need the correct install harness, part # 3034-P. If the vehicle had a 7-way from the factory that is all you would need to install the controller. If instead the vehicle had a factory 4-way you would need to then make a few connections under...
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  • 7-Way to 4-Way Adapter Recommendation
  • I have a better solution for you, but technically the part # HM47065 that you referenced would work go from a 7-way to a 4-way connector. What would be a better solution would be the part # PK12716. This will plug right into your 7-way and will allow you to connect your 4-way to it.
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  • 7-Way and 4-Way Adapter for 4-Way Flat Connector on 2013 Ford F-150
  • To convert your 4-way flat connector to a 7-way connector, I recommend the Hopkins Adapter 4-Pole to 7-Pole and 4-Pole # 37185. This adapter will allow you to use both 7-way and 4-way flat connectors. Installation on your 2013 Ford F-150 will be similar to the 2010 that you referenced. The 4-way flat from the adapter plugs into the 4-way flat currently on your vehicle. The white wire from the adapter needs to be grounded to the vehicle's frame. The blue wire on the adapter will need...
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  • Diode Wiring Kit Recommendation for 2014 Ford F-150 Towed by Motorhome
  • I recommend Roadmaster Universal Hy-Power Diode Wiring Kit part # RM-154. This kit is a confirmed fit for your 2014 Ford F-150. It wires diodes into your existing F-150 wiring and will use the factory lights when towing. We have detailed instructions for you to review, see link, and a video installation of this kit also.
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  • Troubleshooting Green Wire on Trailer Pulled by 2003 Ford Expedition
  • On a 4-Way flat trailer wiring harness, the green wire will go to the right turn signal. The white is the ground, brown is running lights, and the yellow is left turn signal. Take a look at the trailer wiring diagram that I included. This very well could be a ground problem. If so, correcting the bad ground or broken wire could solve the problem.
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  • Recommended 7 Way Wiring Harness for 2010 Ford F-150
  • To add a 7-Way trailer connector to your 2010 Ford F-150 with a factory 4-Way you will need # 37185. This is a partial hardwire installation but on your truck it will be easy. I have linked a video that should help. Go to about the 10 minute, 50 second mark and forward to see the process of accessing the additional wires to make the 7-Way fully functional. You will also need additional length of wire. Part # 10-1-1 should work to reach the wires on the truck. You may also need butt connectors...
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  • Light Kit to Flat Tow a 2015 Ford F-150 Behind a Motor Home
  • For your 2015 Ford F-150 you can use 4-diode kit # RM-154. This is a more permanent installation that does require tapping into the vehicle wiring. For a more temporary solution you could use a magnetic kit such as # C-ATL20A but you would need to also use tow light partners # TLP01 because of the aluminum used in the 2015 Ford F-150s.
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  • Which Pin of a Trailer 7-Way is the Ground Circuit
  • Most likely your trailer has a 7-way and the reason you referred to it as a 6-way is because you didn't count the center plug. But either way I can help if you have either a 6 or 7-way. Since not all trailer connectors will use what is considered the standard wiring setup you would need to check out both of the connector diagrams I attached to determine which wire would be the ground circuit on the connector of your trailer.
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  • Adapter for Converting 4-Pole Flat Wiring Harness to 7-Way Blade Style
  • We offer part # 37185 to convert a 4-pole flat trailer connector to the 7-way RV-style format. This part has a 4-pole plug that matches up to the one currently on your Ford van. Once you plug this adapter in the lighting signals on the 4-pole will be sent to the corresponding pins on the 7-way. I do suggest you use dielectric grease like # LT37534 to protect those contacts from moisture and dirt. If you want to install the 7-way to allow use of a trailer brake controller like the popular...
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  • Parts Needed to Convert a 4-Way to a 7-Way and Install Brake Controller in a 2002 Ford Escape
  • We have exactly what you would need to convert your 4-way to a 7-way so that you can install a brake controller and activate the brakes on your trailer. What you will need is the part # ETBC7. This comes with everything needed to convert the 4-way to a 7-way and install a brake controller. The # 37185 that you referenced comes with just the adapter 7-way, but it does not come with the wiring and breakers to complete the install. For a brake controller I would recommend the Prodigy...
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  • Trailer Turn Signals and Brake Lights Not Working with a 2012 Ford F-350
  • A lot of Ford trucks use fuses and relays for the tow package wiring. Use the owners manual to locate all of the relays and fuses associated with the tow package wiring. Also, there can be tow package fuses in both the power distribution box under the hood as well as in the in-cab fuse panel. Checking fuses is easy but checking relays can be more difficult. the easiest way to test a relay is to use a known good relay in place of a potential bad one.
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  • Can 12 Volt Wire from 7-Way Trailer Connector be Used as an Input on CTEK D250 Battery Charger
  • You could use the 12 volt circuit from your 7-Way trailer connector to one of the inputs on the CTEK battery charger # CTEKD250S. The inputs accept 10 to 22 volts DC power. But even if the voltage is in that range there might not be enough amperage on that 12 volt circuit for the charger to be effective (depending on what you are charging). The longer the distance the power has to travel and the smaller the wire gauge the lower the amperage will be that makes it to the charger.
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  • Running Light Circuit on Factory Trailer Connector Not Working on a 2010 Ford F-150
  • Your 2010 Ford F-150 does use fuses for the tow package wiring. It could also have relays related to the tow package wiring. Use the vehicle owners manual to find the locations to check them. It does sound like a fuse or relay problem. To check a relay the easiest way is to use a known good relay in place of a potential bad one. The other possibility is that there is a break on the running light wire somewhere between the front of the truck and the connector at the back. You can use...
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  • How to Complete the Reverse Light Circuit of a 7-Way Trailer Connector
  • Sounds like something Uhaul would do. Just kidding, there is a large group of people who don't end up using the reverse light circuit of their trailer wiring so I could see them not completing that circuit when they did your install. They should have asked you though. What you are going to need to do is first determine which wire of your vehicle taillight wiring carries voltage when the reverse lights are applied. To do this you will need to use a circuit tester like the part # 3808...
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  • How to Tap Into Reverse Light Circuit of a 2011 Ford Ranger When Installing a 7-Way
  • The purple wire of the Adapter part # 37185 that you referenced is the reverse light circuit and would need to get run to the reverse light circuit of your 2011 Ford Ranger. You will need to use a circuit tester like part # 3808 to test all of the wires running to the taillights of your vehicle until you find the one that carries 12 volts when the vehicle is in reverse. There should only be two wires run to the reverse light socket so it should be easy to determine which one to use. You...
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  • New Electric Trailer Brakes Not Working After Installation on 5th Wheel Trailer
  • It is possible that the wire gauge used on the trailer is not large enough to handle the current required by the new brakes. We recommend using 10 gauge wire such as # 10-1-1 in these situations. Also, make sure that the magnets on the brakes are grounded to clean and corrosion free bare metal surfaces near the magnets. You may also need to have the drums inspected to see if they need to be turned or replaced. If any grease got inside the drum or on the shoe pads then that would negatively...
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  • Troubleshooting 7-Way to 12 Volt Power Outlet Adapter for a 2010 Ford F-150 Platinum Supercrew
  • I recommend using a circuit tester like # 40376 and test the 12-volt pin, located in the 1-o'clock position on your 7-way connector. Also, check the bottom pin which is the ground circuit. I would also check your vehicle fuse panel and make sure that there are not any damaged fuses that could be causing this problem. The wiring in the adapter # PK11896 wasn't designed to be altered. I included a informative article about wiring for you to look at.
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  • Will the Power Grip 90-Degree Locking RV/Marine Power Cord CAM55572 Work with a FCKIT52-PS
  • Yes, I looked up the outlet you referenced and it appears to be a 50 amp socket like what the # CAM55572 that you referenced is designed to work with.
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  • Wire Length of TorkLift Wiring Extension # TLW6524
  • I went to our warehouse to get the TorkLift wiring extension # TLW6524 to provide you the measurements from the Y to the 3 separate 7-way connectors. With the help of a co-worker we straightened it out as tight as possible and the measurement was 8 feet 10-1/2 inches to the base of the 7-way connector. The other two 7-way connectors will measure 6-1/2 inches from the Y to the base of 7-way (shortest of the 3 measurements), and the other is 3 feet 6 inches from the Y to the base of 7-way.
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  • 4-Way to 5-Way Adapter Recommendation for a Reverse Lock Out Solenoid
  • What you need to convert the 4-way on your 2002 Ford Super Duty is the part # 20036. This will plug in to your 4-way and will then allow you to run a wire to tap into the reverse light circuit of your vehicle so that your reverse lockout solenoid will activate in reverse.
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  • How to Wire Third Brake Light on Trailer
  • To add a third brake light to your trailer I recommend Optronics Sealed, Streamline LED Trailer Third Brake Light, 1-Function, # STL80RB. This can be wired to your trailer using the Tow Ready Vehicle to Vehicle Taillight Converter, part # 118158. To install the tail light converter # 118158 on your trailer you will connect the wires on the input side of the converter, white (ground) to the trailer frame, green wire to green wire on your trailers wiring, and yellow wire to yellow wire...
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  • Troubleshooting Factory Trailer Wiring on 1998 Ford Ranger with Left Side Functions Inactive
  • You can try replacing the factory 4-pole harness on your 1998 Ranger with part # 118241 from Tow Ready. This has a round connector on one end to plug in to the OEM wiring under the vehicle on the driver's side. If the problem is downstream of that point then this should fix you up. You can also check to make sure that any fuses labeled trailer or towing are okay. If there is a problem in the wiring upstream of that connection point then that may be tougher to find and correct. You can...
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  • Need OEM Rectangular Socket to 7 Way Adapter for 2001 Ford F-250 Super Duty
  • For your 2001 Ford F-250 Super Duty you will need the Ford OEM Tow Package Wiring Harness, # 118243. This harness plugs directly into the standard OEM connector shown in your picture and fuses and relays are included. I have attached an installation video for you.
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  • What Style of Connectors Does the Bargman 7-Way Molded Trailer Wire Connector # 50-67-210 Fit
  • The Bargman 7-Way Molded Trailer Wire Connector # 50-67-210 that you referenced uses a standard RV style 7-way flat connector on both ends. The socket it would fit would look like the part # PK11893. This style of 7-way is the kind that is very commonly seen at the rear of vehicles and RVs.
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  • 6-Way Recommendation for Trailer and Tow Vehicle
  • For the trailer side 6-way you would want the part # PK11604 and then for the matching socket you would want the part # PK11609. We don't carry any grommets for the vehicle side 6-way that you referenced and the part # 118152 would be a great choice for storing the 6-way.
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  • Dome Lights Are Not Working In Enclosed Trailer With 7-Way Connector
  • The first thing I recommend is to use a tester like part # 3808 and check the 12V circuit on the wiring connector on the truck. If you have no current showing there may be a fuse missing or blown for that circuit. You would want to check the owner's manual or with your dealership to see which fuse is dedicated to that circuit. There are times when the dome lights may be attached to the running light circuit. You may want to try turning on the truck headlights when the trailer is hooked...
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  • Recommended Wiring Harness for a 2005 Ford F-150 with Factory 4-Way
  • What I recommend for your 2005 Ford F-150 is to install a Hopkins 7-way adapter # 37185 and splice the 12V power wire, brake controller wire and reverse light wire into the wiring at the back of your F-150. Take a look at the informative article I included. Your current 4-way connector will plug into the Hopkins adapter # 37185. Unfortunately, there currently isn't an aftermarket option to simply plug in a 4-way to a 7-way adapter for your 2005 Ford F-150. I also included a couple...
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  • Troubleshooting 3035-P Connector Doesn't Power Brake Controller When Installed in a 1998 Ford F-250
  • It sounds like the pin out for your # 3035-P may be off. You may actually have a different harness that uses the same connector, but has a different pin out on the side that installs on the vehicle. You will want to verify that the pin out of your connector matches what is in the picture I attached. If yours is different you can use a paper clip to release the wires from the connector so that you can move them where they belong.
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  • Replacing Existing 7-way Trailer Connector on Motorhome on Ford E450 Chassis
  • Depending on the 7-way connector you presently have, we might have a very easy solution for you. Take a look at your existing 7-way, and see if it's possible to unplug the factory harness from the back of the connector. There will be a gray locking tab that needs to be slid toward the front of the vehicle before the connector can be unplugged. If it's possible to unplug the harness, the Tow Ready # 20119 would be a perfect plug and play replacement. If you cannot unplug the connector...
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  • 4-Pole to 4-Pole Adapter to Connect a Colorado Sport Trailer to a 2004 Ford Ranger
  • Thanks for the pictures! On your Colorado Sport trailer, I have a solution for you but the connector that came with your trailer doesn't match the typical style vehicle trailer connectors and unfortunately no adapter is available. I recommend splicing in the Draw-Tite 4-pole trailer end connector # 18004 as it will connect with your existing 4-pole connector on your 2004 Ford Ranger. Because your trailer uses separate turn signals from the brake lights, you will also need to splice...
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  • Recommended 7 Way to 5 Way Adapter for 2014 Ford F-250
  • I have just the thing for you. Take a look at the Hopkins 7 way to 5 way adapter # HM47075. The adapter plugs into a 7-Way blade style on the truck and has a 5-Way flat at the back to plug in any trailer that uses a 5-Way flat. I have included a video review of this part for you to check out.
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  • Trailer Brake Lights Do Not Work When Connected have a 96 ranger with seprate turn and brake
  • Whenever any type of adapter like # PK12716 is used to mate different types of connectors on the vehicle and trailer, connection problems can develop because of all the extra contact points. The best way to go is to install a new connector on the trailer that directly matches that on the tow vehicle so that you can avoid using an adapter. This is easily done by using a junction box like # 38656 and a new 7-way plug like # H20044. All you need to do is verify the function on each trailer...
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  • Mounting Hardware for a Bargman 7-Way Super Sealed Connector with Cable
  • I recommend the plated steel mounting bracket # PK12711U-26 for the Bargman 7-way super sealed connector # 50-87-002 because it has ports for mounting a 7-way round or 4-flat trailer connector. The mounting holes are 2-1/4 inches eye to eye. See diagram I included. The mounting hole dimensions on the 7-way super sealed connector # 50-87-002 are 1-1/2 vertical eye to eye and 2-1/4 horizontal eye to eye. See picture. Take a look at the video reviews for each product if you would like.
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  • Troubleshooting 7-Way to 5-Pole Adapter with the Left Turn Pin Isnt Working
  • That's kind of an odd problem...does the left turn pin (9:00 position) in the 7-way function properly when the adapter isn't being used? Use a circuit tester like part # 40376 to ensure the trailer connector's been wired correctly. Activate the left turn signal, then test the pin in the 7-way for the left turn. If you're not getting a signal, use the tester on the wiring harness feeding the 7-way. If you're not getting power reaching the 7-way on that circuit, you likely have a blown fuse....
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  • Troubleshooting Trailer Running Lights That Dont Work When the Rest of the Lights Do
  • In addition to the main ground, each tail light assembly at the back of the trailer must also have a ground. These are most commonly grounded to the trailer frame or through the bolts of the tail lamp assembly. I recommend checking to make sure that each light on the trailer has an adequate ground. Next I would check to make sure that both connectors, vehicle and trailer, are free of dirt and corrosion. If both are in good condition, I would move on to testing the vehicle connector....
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  • 5th Wheel Wiring Harness for 2000 Ford F-150 Extended Cab
  • Yes, you can add a second 7-way in your truck bed for 5th wheel towing while keeping your existing bumper-mount 7-way active. Curt harness # C56000 plugs in inline with the existing wiring leading to your 7-way. It allows that socket to remain active while adding the second 7-way in the truck bed for towing your 5th wheel trailer.
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  • Troubleshooting 12 Volt Accessory Circuit Not Functioning After 6-Way Connector Install
  • It is possible that you shorted out the 12 volt trailer wiring circuit of your truck while you were wiring in the connector. Since this circuit would have voltage all the time it would be pretty easy to short it out while wiring up a new connector. Check the fuse box for the 12 volt accessory trailer circuit relay/fuse and replace as needed.
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  • Recommended Trailer Wiring Harness for 1998 Holiday Rambler
  • Your 1998 Holiday Rambler shouldn't require a special converter but if the installation was completed per the instructions and this is the second unpowered converter that you have tried, I recommend trying a powered converter with circuit protection like the Tow Ready, # 119190KIT. With a powered converter the power is drawn directly from the vehicle's battery which virtually eliminates any draw on the taillight circuit.
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  • How to Rewire Trailer for 6 Way Connection with Separate Turn Signals and Brake Lights
  • First you will want a new 6-way like the Hopkins 6-Way Molded Connector, # H20036. Installing the 6-way plug will be made easier by using a junction box such as # 38656. This box mounts to the trailer frame and serves as a connection point between the trailer's original wiring and the new 6-way. Also you will want some Deka jacketed 2 wire, 10 gauge, brake wire # 10-2-1 to run the brake output circuit from the junction box to the brake assemblies as well as some Deka 16-gauge bonded 4-wire...
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  • Dimensions of Bargman 5th Wheel and Gooseneck 90-Degree Pigtail Harness # 51-97-407
  • I pulled a sample of the Bargman 90-Degree Pigtail Harness # 51-97-407 from our warehouse so I could take the measurement you require. As shown in the linked photo the distance from the rear surface of the mounting flange to the 90-degree bend is 3-3/8-inches.
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  • 4-Way to 6-Way Wiring Adapter to Power Lights and Charge Battery of Camper
  • Sounds like you have a 4-way connector at the rear of your 1999 Ford F-150 and are looking for a way to install a 6-way so that you can power the camper you have that has a Pollak 6-way like the part # PK11604. For an adapter you would want the part # 30637. This will plug into the 4-way and will convert the taillight signal to a 6-way. To activate the power circuit for the camper battery you will need to run the black wire from this adapter to the positive post of the truck battery...
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  • Installing 7-way Connector on 2003 Ford Explorer with Factory Tow Package
  • If you'll follow the wiring from your 4 pole trailer connector back under the vehicle, you'll find it plugs into a connector on the driver's side frame rail. Just past where it plugs in, remove the tape or wire loom from the wiring harness. You should see an orange (or red) and a dark blue wire. The orange wire carries a trailer power circuit from the battery, and the blue wire connects to where you plugged the controller in to carry the braking voltage to the trailer brakes. You'll...
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  • Brake Controller and Wiring Recommendation for a 2008 Ford Explorer Towing Trailer with 6-Way
  • The part # 37175 could be used to adapt your 4-way to a 6-way, but you will be required to track down several other components so that you can make the connector functional and to install a brake controller. A better product to get would be the part # ETBC6 as it comes with everything needed to convert the 4-way to a 6-way and wire up a brake controller. I attached a link to install instructions plus an install video for you to check out. I also attached a picture that has a diagram...
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  • Factory 7-Way Replacement Recommendation for a 2014 Ford F Series Super Duty Truck
  • The truck manufacturers all decided to start using the same 7-way wiring harness connectors in the early 2000's, so the # PK11893 will fit all of them. I attached a picture that shows what the round connector looks like that the 7-way is designed to fit. As long as your 2014 Ford F Series Super Duty has/had a factory 7-way installed on it, or the connector is present, the part # PK11893 will be the correct part to use.
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  • Installing 7-Way Trailer Connector on 2001 Winnebago
  • From what you describe, your trailer connector isn't converted. Most trailers use the same bulb for brake lamps and turn signals, so the signals for the right turn and brake lamp are combined onto one circuit, and left turn/brake lamp are combined onto another. I wouldn't use the 47435 adapter, I have a better solution for you. For starters, I'm assuming your trailer lamps operate as I mentioned above. If that's the case, you'll need to install a converter like # 119178KIT on the circuits...
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  • Wiring a Truck Bed Camper Shell Brake Light on a 2007 Ford F-150
  • To wire a brake light only on a truck bed topper/camper shell you will need a dedicated brake light only circuit. Tow package wiring would not work because the brake light circuit and turn signal circuits are together. So you would either need to find a wire under the truck that is dedicated brake light only or you would need to tap into the CHMSL (center high mount stop lamp) circuit. Check the owners manual to see if the CHMSL is fused by itself or if the fuse handles other functions...
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  • Installation Of 4-Pole to 7-Pole On 2006 Ford Expedition
  • I recommend using the Hopkins Adapter 4-Pole to 7-Pole and 4-Pole, part # 37185 for your 2006 Ford Expedition. I have attached a photo of the adapter that shows the wires and what they are used for you can check out. You can find the wires you need to connect the adapter to on the driver's side frame rail as shown in the photos I have attached. I have also attached a helpful article that explains how to complete the installation. I recommend using a circuit tester like part # 3808 to...
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  • Troubleshooting 4-Way Harness On 2013 Ford F-150 And Trailer Wiring
  • If you installed the 4-way connector at the back of your 2013 Ford F-150, you can check the connector first to make sure it is wired correctly. I recommend using a circuit tester like part # 3808 and check each pin for function. You want to make sure the pin connected to the yellow wire shows current for your left turn and brakes, green is for right turn and brakes, brown is for the tail lights, and the white wire is the ground which should be secured to a clean, bare metal surface. You...
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  • Mounting Bracket Recommendation for Use with 4-Way to 7-Way Adapter part # 37185
  • The correct bracket to use for the 7-Way Adapter part # 37185 is the Mounting Bracket part # 18138. This comes with the bracket and the mounting screws.
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  • Installing New 7-Way Harness On Camping Trailer With Electric Brakes
  • I have attached a helpful article that explains trailer wiring. You are correct that most diagrams do list the Yellow wire for the left turn and green for the right turn wiring. Since you are re-wiring the entire trailer you can easily make sure you run the wires to match your 2011 ford Explorer wiring. You can test your Explorer wiring by using a circuit tester like part # 3808. Test each pin for function and not by color. Then match the pins on your trailer connector to the mating...
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  • Replacement 7-Way Recommendation for a 1994 Ford Bronco
  • The easiest way I can recommend you replace the 7-way on your 1994 Ford Bronco would be to go with a part # 20023. You will have to cut the harness running from your 7-way and then wire the new 7-way by function. To determine what wires go to each other you can use a circuit tester like part # 3808 to test all of the wires by function while a buddy applies the different taillight functions of your Bronco and then wire it by function according to the diagram I attached.
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  • Troubleshooting 7-way On 2004 Ford F150 Not Showing Left Turn Signal
  • If you've tested the 7-way on the vehicle, and have determined that you have no signal on the left turn signal pin, closely examine the trailer connector. Make sure it's not damaged or excessively corroded and clean/replace if necessary. If the trailer connector checks out okay, take a look at the wiring harness that feeds the 7-way, right behind the connector. Find the yellow wire in the harness and use a circuit tester like part # 40376 to test the wire as a helper activates the left...
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  • 7-way Recommendation to Replace a 6-Way
  • I would recommend you cut off the 6-way you have at the rear of your truck and then install a # 50-87-004 in it's place. I attached a couple wiring diagrams for the two styles of connectors so that you would know how to wire up the new 7-way with the wires from the 6-way.
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  • Where to Find the Orange 12 Volt Power Wire for Wiring a 7-Way on a 2010 Ford Expedition
  • Follow the 4-way trailer connector wires from the trailer connector to the front of the vehicle. These wires connect to a factory plug along the frame rail, usually on the driver's side, between the back tires and the rear bumper (see attached picture). The factory plug should be mated to another connector which has wiring that continues back toward the bumper. There are more wires coming from the front of the vehicle than there are coming out toward the 4-Way plug. Ford wires the front...
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  • How to Install a 7-Way on a 2010 Ford Expedition EL with a 4-Way
  • The 2010 Ford Expedition should have a round connector at the rear of the vehicle where your 4 pin plug is plugged in. If there is a round connector there you can use the Replacement Multi-Tow 7-Way and 4 Pole Trailer Connector, item # 20119, to replace the 4-Way OEM connector on your Expedition. If your Expedition does not have the mating round connector under the rear of the vehicle you will need to use a 4-Way to 7-Way adapter like item # 37185, to provide a 7-Way connector at the...
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  • Instructions to Wire Dump Trailer with Electric Brakes
  • I would use the RV-Style Trailer Connector, # PK12706, which you reference, and install the wires in the proper locations in the 7-Way connector. Our wiring page, see link, has photos that detail the wiring configuration of the 7-Way RV trailer connector for you to check out. You will need to test the functions of each wire using a 12 volt battery to determine their function. Once you know the function, you can use our trailer connector wiring diagram to make the proper connections.
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  • Troubleshooting a Trailer that Taillights, Blinkers Both Flash and Only One Running Light
  • It sounds like the problem is the wiring of your truck like it sounds you have determined already. What I would do is use a circuit tester like part # 3808 to test the circuits of your 7-way while a buddy applies the different taillight functions. Use the diagram I attached to the right for more info. The problem could be as simple as corrosion on the connector that needs to be cleaned off (inside or outside of the connector), or it could be that the wires of the connector have shorted...
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  • Troubleshooting Trailer Brakes that Lock Up When Connected to Trailer Wiring
  • This is a fairly common problem for trailer setups that use 6-way connectors like the # PK11604 that you referenced. The issue is that there is two accepted ways the connector can be wired up. The only difference between the two setup is that the brake output circuit and the 12 volt accessory circuits are swapped. It sounds like your vehicle is wired one way and the trailer is wired the other way. What you will need to do is swap the two circuits on either the trailer or the truck....
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  • Horse Trailer Brakes Lock Up When Connected to 1999 Ford F-250
  • It sounds like either the trailer side connector is not pinned to match the vehicle side connector or there is a short circuit (possibly due to corrosion on the pin or inside the trailer connectors) causing the brakes on the trailer to lock up. The easiest thing to check first is for dirt/corrosion on the pins and inside each of the trailer connectors. Then you can make sure that the trailer side connector is wired up to work properly with the vehicle side connector. I have included...
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  • Flat Towing Wiring Options for 2014 Ford F-150 Platinum
  • Strictly speaking, both you and your friend are correct. It just depends on which type of toad wiring harness is used. The link at right will show you all flat-towing wiring kits for the 2014 Ford F-150 Platinum. These include a custom-fit option from Hopkins, part # HM56000. This kit installs without cutting and splicing by plugging in to the F-150 tail lights and includes integrated diodes to prevent feedback. This operates as a combined lighting system.
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  • Troubleshooting Factory Trailer Wiring for 2003 Ford F250
  • First I recommend cleaning the connector and make sure there is no corrosion on the pins. Check the wires at the back of the plug. You may need to remove the wires from the connector as corrosion can build up in the connector. If all of the connection points are corrosion free, then begin testing the wires themselves. Since you are not receiving a signal on some of the pins I recommend tracing those wires back till you find a point where the signal is active. It may be that connection...
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  • Brake Controller Install on 2000 Ford F-150 With 4-Flat trailer Connector Using Adapter # HM47200
  • The additional wire leads on the Hopkins # HM47200 Quick-Install Trailer Connector Adapter are provided to deliver additional signals to the 7-way vehicle socket. These signals include the brake controller output signal (blue wire), the trailer 12V power feed (red wire) and the vehicle's reverse light signal (purple wire). The white wire is ground. The blue lead connects to the blue wire at the back of your brake controller; the red wire connects to your vehicle battery positive terminal...
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  • Replacing 4-Pole Trailer Connector on Trailer With 7 Different Circuits Feeding It
  • It sounds like you've got a pretty good handle on what you're dealing with. You're correct, the green is right turn/brake, yellow is left turn/brake, black/green is right taillight and black/yellow is left taillight. The remaining wires are almost certainly grounds. I'm guessing you're not the original owner of the trailer or the person who wired it last time. Rather than grounding each trailer lamp directly to the trailer frame by its mounting studs or individual ground wires connected...
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  • Installing a 7-Way and Brake Controller on a 1998 Ford Expedition with 4-Way Flat Connector
  • On a 1998 Ford Expedition with a factory 4-Way trailer connector, it is fairly easy to install a 7-Way and a brake controller. All you will need is the 4- to 7-Way adapter and the proper brake controller wiring harness. If you follow the factory 4-Way forward on the vehicle you will come to a point where it plugs into a forward connector. There are more wires going into the forward connector then go out to the 4-Way. On the forward connector and the wiring running to it, pull back the...
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  • Adapter to Mate Round Vehicle Connector with 5-Pole Flat Trailer Connector
  • Most often vehicles with factory- or dealer-installed trailer connectors have a 7-way RV blade style connector, but indeed sometimes a 6-pole round pin socket can be found on vehicles. The part you referenced, Pilot 6 Pole to 5 Pole & 4 Pole Adapter # TC-129, has the correct configuration to adapt your vehicle and boat trailer that has a 5-pole flat connector. Adapters are great for occasional or short-term applications but you may find that over time you'll prefer to replace one of...
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  • Trailer Wiring Recommendation for a 2003 Ford Crown Victoria
  • Yes, the Hopkins Active Taillight Converter with Install Kit # 46255 that you referenced has been confirmed to fit your 2003 Ford Crown Victoria so it would be a great option to use to install trailer wiring. I attached installation instructions to the right for you to check out as well. Another option you have is the part # 119178KIT, this is also confirmed to fit your vehicle. We had the chance to install this wiring kit in a very similar 2003 Crown Vic as yours and shot an install...
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  • Troubleshooting a 2013 Ford Escape that Hyper Flashes When Connected to Trailer with LED Lights
  • You have a couple options to solve the hyperflashing problem you are experiencing with your 2013 Ford Escape when towing your RV. You can either use a product like the part # C57003 or you can take your vehicle to a Ford dealer and they will do a software update on your vehicle which should fix the problem. There should be a technical service bulletin that said that trailers with LED taillights can cause the Escapes to hyper flash and they can fix it if you bring the vehicle in to them.
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  • Trailer Connector on 1994 Ford F-250 Only has 12 Volt Power on the Center Pin
  • If it is really a 6-Way and not a 7-Way blade style trailer connector then the center pin being hot would indicate that particular pin is the 12 volt power circuit. But the other functions not working could mean that tow package wiring fuses and/or relays are missing or need to be replaced. Check the truck owners manual to find the locations of any and all fuses related to the tow package wiring. If the wiring was added and is not factory then you will need to check the wiring connections...
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  • Troubleshooting Running Lights and Dash on 1986 Ford Econoline Jayco Motorhome
  • You said you checked the fuses. Some motorhomes have fuse boxes in multiple locations, inside the engine compartment, inside the cab under the dash, and even in the camper sewer/electrical compartment. Sometimes a fuse may appear to be in good condition, but really needs replacing. To rule that out, take a new fuse that has the same rating and insert it into the proper location. If the problem is a short, and the next fuse that you insert shorts out as well, you will need to use the...
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  • What Is The Wiring Configuration For 4-Way Round Connector
  • On a flat 4-way connector, the standard function is Green is the right turn signal and brake, Yellow is left turn signal and brake, White is ground, and Brown is the running lights, used when the headlights are on. You may want to test the wires for function just to be sure. You can use a circuit tester like part # 3808 for that. I have attached a photo that shows typical wiring for a 4-way round connector.
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  • 4-Way Recommendation for a 1997 Dutchmen Popup with a 6-Way Square
  • The pinout of the # 30104 that you referenced will only work on Jayco trailers. Although the connector is the same the wires are run to different pins on the 6-way side of the connector. Your best option would be to cut off the 6-way on your trailer and then wire up a 4-way to the trailer wires. For that I would recommend the # HM48110. You will need to wire the 4-way up by function to your trailer and not wire color as they most likely are different. The yellow wire of the 4-way...
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  • Parts Needed to Install a Prodigy RF and 7-Way Connector to a 2013 Ford Escape
  • The Hopkins adapter # 37185 works great with the Prodigy RF wireless trailer brake controller # 90250. You will also need about 20 feet of 10 gauge wire # 10-1-1, and 40 AMP circuit breaker # PK54540. The Prodigy RF will need 12-volt circuit on a 7-way to work which is why you need the 10-gauge wire and circuit breaker. I recommend using dielectric grease between the two connection points to help keep down corrosion. The Edelman dielectric grease part number is # 11755 I have included...
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  • Will Hopkins Endurance Flex-Coil Trailer Connector Adapter Work With Heavy-Duty 4-Way Connector
  • If you have a round 4-way connector, the Hopkins Endurance Flex-Coil Trailer Connector Adapter w/ Nite-Glow, part # HM47043, should work just fine. This adapter plugs into a 7-pole blade-style connector for use with a 4-wire round connector on your towed vehicle. This also has a Nite-Glow feature so you can make your connections even in the dark. I have attached a video you can check out for this connector.
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  • Adding 5th Wheel/Gooseneck Trailer Wiring in the Bed of a 2015 Ford F-350 with 4-Way Flat Connector
  • To determine if you will be able to use the 5th Wheel adapter harness # 20140 you will need to follow the factory 4-Way back to where it plugs into another harness. If the plugs are round and match the picture I have included then you could use this adapter and you would still have full functionality of the bumper mounted 4-Way. But if you used this item you would have to then hardwire the blunt cut wires to the back of a vehicle side 7-Way. So if you do have the round connectors that...
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  • Brake Controller and Wiring Recommendation for a 2006 Ford Explorer with Factory 4-Way
  • What you will need to install a 7-way/4-way on your 2006 Ford Expedition would be the Hopkins Adapter part # 37185. Your current 4-way will plug into the 4-way of this adapter and will connect to the vehicle's tow package wires which are along the rear frame rail (if present). Check out the two picture I attached to determine if you have the tow package wiring on your vehicle plus the FAQ article I attached as well on installing a brake controller in a vehicle such as yours. If you...
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  • 4-Way Trailer Wiring Harness Recommendation for a 2014 Ford C-Max
  • The recommended trailer wiring harness for your 2014 Ford C-Max is the Curt Harness part # 56146KIT. The local trailer rental place would have no problem at all installing this kit as I am sure they install similar harnesses on vehicles on a regular basis. There are instructions included with this kit that I attached to the right in a link as well as an install video. For ball mounts I recommend the etrailer Ball Mount Kit # 989900. It comes with 2 ball mounts, 2 balls, a hitch pin with...
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  • Where to Connect the Red Wire of a Brake Controller in a 1995 Ford F-150
  • For the red wire of your brake controller you will need to tap into the brake light switch of your 1995 Ford F-150. What you need to do is test the wires of the switch at the brake pedal to determine which of those wires sees voltage when the brakes are applied and none when released. That will be the circuit you attach the red wire of your brake controller to. The brake controller should still power on though without this connection being made. As long as the power wire (black) and...
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  • No Power from Ford Brake Controller to 7-Way Trailer Connector on 2010 Ford F-150
  • I think this might be the ultra-rare Ford dummy harness issue. A few years ago I had a customer with a similar problem. It took days of troubleshooting and a savvy Ford tech at a dealership to determine that the harness behind the dash that the controller plugs into was not a complete harness so that could be what is going on. Ford would have to provide the harness. If you have the correct harness, which is likely given how rare this issue is, then it could be another problem with bent...
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  • No Power to 7-Way Trailer Connector on a 2004 Ford F-150
  • It sounds like a possible tow package fuse has blown on your 2004 Ford F-150. You will want to use the truck owners manual to find the locations of all fuses/relays associated with the tow package wiring to check them. The 12 volt pin on a 7-Way does not affect the regular trailer lights and the fact that everything stopped working with the interior lights is what makes me think the issue is related to the tow package fuses (specifically the one that controls the 12 volt circuit on the...
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  • Trailer Wiring Installation on 1999 Ford E450 Van
  • If you're speaking of the video showing the # 119178 being installed on a 1999 Ford Van (see link), the harness is wired into the vehicle side of the van, closer to the front of the vehicle. The vehicle being wired in the video had a 'separate' taillight system, meaning that the turn signal and brake lamp are combined on the same circuit. You can quickly tell if your vehicle has this type of system by looking at the taillights. If the turn signals use a separate amber bulb or there's an...
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  • 5-Way Adapter Recommendation for a 2008 Ford Explorer Sport Trac
  • Your 2008 Ford Explorer Sport Trac should come with a 4-way already installed. All you would need to convert it to a 5-way would be a # 20036. Next you will need to do is figure out where to run the fifth (blue) wire of the # 20036. Most likely this wire is used for a reverse lockout for surge brakes, or reverse lights. If this is the case you will need to tap into the reverse light circuit of your Soul using the included quick-splice. I attached an installation video for the # 20036...
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  • Best 7-Way Trailer Connector Extension for a 1996 Ford Super Duty
  • It sounds like you are looking for an extension for the factory 7-Way on your truck to add in-bed wiring. We do have 1 option that would work but it is 7 feet long. If you can work with that it is # 20027.
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  • Tracking Down Possible Poor Ground Connection on Travel Trailer
  • What you're describing is the classic symptom of a poor ground connection somewhere in your trailer lighting system. When all the functions are being used, you're drawing maximum amperage through the system, which is when a ground problem will manifest itself. Trace the white ground wire back from the trailer connector. The wire will usually ground to the trailer frame somewhere on the trailer tongue. Make sure this connection is secure and not corroded. Each trailer lamp will also have...
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  • When Trailer Connected to 2002 Ford F-350 Trailer Lights Do Not Work
  • This sounds partially like a ground issue. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. Even if the pins in the connectors are clean, corrosion can build...
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  • No Trailer Brake Signal on Factory 7-Way Using Prodigy P2 Brake Controller on 2003 F-250
  • Given the 11-year-old age of your vehicle (and presumably its 7-way factory-installed trailer connector) the issue you are having with no brake signal at the brake circuit pin on the 7-way could be a result of a corroded or damaged 7-way. You can use # HM40975 as a replacement for a factory 7-way. First I suggest you carefully inspect both sides of the F-250's 7-way looking for any signs of damaged wire, worn insulation or even slight greenish or whitish discoloration. Corrosion does...
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  • What Wire Gauge Needed for 12V Trailer Power Feed
  • A 12V trailer power circuit will typically be wired with 12-gauge wire, part # 12-1-1, but certainly there is no harm in using heavier 10-gauge wire # 10-1-1. If one tow vehicle is longer than another, our installers may opt to use the heavier gauge wiring than they would for a physically shorter vehicle. When in doubt you can always use 10-gauge.
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  • 7-Way Adapter Recommendation for a 2004 Ford Expedition Towing Surge Brake Trailer with Lockout
  • All you need is the 4-way to 7-way adapter part # 37185. Now to activate your reverse light solenoid you have on your trailer with surge brakes all you will need to do is connect the purple wire of this harness to the reverse light circuit of your 2004 Ford Expedition. To find the right wire you will want to use a circuit tester like part # 3808 to test the wires of the reverse light harness. Once you find the circuit that has current when the reverse lights get turned on you will attach...
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  • Installation Instructions For Hopkins 4-Pole To 7-Pole And 4-Pole Adapter On 2002 Ford F-150
  • I have attached a couple of helpful articles that explains how to attach your Hopkins Adapter 4 Pole to 7 Pole and 4 Pole, part # 37185. I have also attached a drawing that shows where the wires need to be run from the adapter you can check out. As the attached video shows, you may have a harness on the driver side up along the frame rail you can splice the blue wire and the black wire into the wires on the vehicle. For additional blue wire if needed, I recommend part # 10-1-1,...
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  • Troubleshooting Non-Functioning 7-Way on Motorhome
  • Since your wiring was accidentally pulled out of the motor home socket, and since you have already checked your fuses and relays, it could be that the socket itself or its connector was damaged. We do offer a replacement 7-way for the F-450 SD and that is part # 20119 from TowReady. This OEM replacement harness installs using a round U.S. Car connector and provides both 4-pole and 7-way connection points.
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  • Troubleshooting Trailer Lights After Installing Hopkins Adapter 4 Pole to 7 Pole and 4 Pole # 37185
  • You will want to test the Escape's 4-pole wiring, that connects to the Hopkins Adapter # 37185, to determine if the vehicle is properly sending the lighting signals to the adapter. Use a circuit tester like # 40376 on each of the wires on the vehicle's 4-pole harness. Ground your tester to the exposed pin for the white ground wire. The yellow wire should carry left turn and stop light signals; the green wire should carry right turn and stop light signals; the brown wire should carry a running...
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  • How to Determine What the Orange Wire of Trailer Wiring Circuit is on Trailer with 9-Way
  • The colors of the wires used for wiring up a trailer can vary widely among trailer manufacturers. Especially on a trailer as old as yours where someone could have rewired the connector with whatever wire was convenient. To determine the function of the wire you can trace it back to see where it terminates or you can use a jumper wire from the positive post of a vehicle battery to put 12 volts on that wire to see what circuit activates. Typically on a trailer with a 9-way installed...
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  • Does Computer have to be Flashed After Replacing Factory Brake Controller On 2008 Ford F-350
  • The factory integrated brake controllers, especially the first generations of them, performed poorly as you have described. They are just not designed well and thus not effective. On newer trucks they have gotten better but I would still say an aftermarket controller is superior. When you install an aftermarket controller in your 2008 Ford F-350 the factory controller will have to be disconnected. This will cause a fault code to appear. That fault code will have to be cleared by your...
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  • Where to Find the 12 Volt Power Wire for 7-Way Wiring on a 2012 Ford Expedition
  • Actually the color wire you are looking for to power the 12 volt power circuit of the 7-way adapter part # 37185 is orange in color and will be right near where you found the blue wire for the brake controller. See the picture I attached plus the FAQ link to the right that details how to install a brake controller in an Expedition like yours. The other solution you have would be to run a 10 gauge wire like part # 10-1-1 (sold by the foot) through a 40 amp breaker like part # PK54540...
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  • Powering Third Brake Light on a 1985 Scamper Truck Bed Pop-Up Camper
  • The wire that attaches to the red wire on a brake controller is a dedicated brake light only wire so it could work. But I would not use it for a light and a brake controller at the same time since it is not meant to have the extra draw on it. Another option is to take a combined circuit with brake light and turn signal and use a converter such as # 118158. The output side would provide a red, brake light only wire. I have had customers tell me that you would need both the green and...
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  • Installing 7-Way Trailer Connector on 1999 Explorer w/ 12-Volt Power Circuit for Trailer Battery
  • To install a 7-way trailer connector on your Explorer, you'd first need a functioning 4-pole. If you don't have a 4-pole, you can install one using part # 118345. At this point, you'll need to decide if you need the 7-way to provide the lighting and battery circuits only to the trailer, or if you need to install a brake controller on the Explorer as well. If you just need the lighting and battery feed circuit, you can use an adapter like part # 37185. The adapter would plug into your...
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  • Troubleshooting Brake Controller On 2002 Ford F-250 Heavy Duty Truck
  • The red indicator light you have on your brake controller should start out dim and when brakes are applied or if the manual control is used, and increase in brightness as you increase the output. It sounds like your controller is working properly when the trailer is not hooked up but is acting opposite of how it is supposed to work when you hook the trailer to your vehicle. I would use a circuit tester like part # 3808, and make sure all the wiring connections are receiving current...
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  • Brake Controller Installation on 2006 Fleetwood Terra 32S Motorhome
  • You would almost certainly need to install a controller. Factory installed brake controllers are fairly common on full sized trucks, but not so much on motorhomes. You'd need to install a brake controller. I'd recommend the Tekonsha Prodigy P2, part # 90885. The P2 is extremely easy to use and is highly rated by our customers. The controller would install under the dash, most commonly to the right of the steering column so you don't bang your knee on it when getting in and out of...
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  • Will Curt Trailer Connector with Backup Alarm, # C57101, Fit 2009 Ford e-250 Van w/Factory 7-Way
  • Yes, your 2009 Ford E-250 van uses the same connector to plug into the back of the 7-Way as the F-series trucks. So you can use Curt Trailer Connector with back up alarm, # C57101. I have linked a video review for you.
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  • Trailer Side 4-Way Recommendation with Wishbone Wiring for the Running Light Circuit
  • Sounds like you are looking for a wishbone trailer wiring harness. One that has two wires run to the (brown) running light circuit. I have a solution for you, but the # HM48192 would not be the correct part. You would want the part # A20WB instead as it has a wishbone setup already with two wires running out of the running light circuit pin.
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  • Trailer Lights Not Working when Headlights are Turned On On a 2013 Ford Edge
  • There is one sure way to determine if the factory trailer wiring harness on your 2013 Ford Edge is pushing back enough power. You will need a multimeter such as # BTMT15. Have someone sit in the vehicle and go through the light functions while testing for amperage. You would also need to determine how many amps each light draws. Then with some simple math you can figure out if the trailer is drawing too much power to power the lights when the running lights are on. An easier way to...
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