Plug-N-Tow (R) Vehicle Wiring Harness

See what our Experts say about this Hopkins Custom Fit Vehicle Wiring

• Parts Needed to Install a 7-Way in a 2008 Ford F-150
  You will need to start with a 4-way (if you do not have one). For that you would want the # 40185. Now if your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way. If you do have trailer brakes you would need the # 3035-p and the # 37185 and a brake controller. The brake output circuit is ran to the truck frame rail where you can easily complete it to the blue wire of the 37185. Check out the FAQ article I attached on this...
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• Is The Plug-N-Tow (R) Wiring Harness # 40185 Compatible With a 2008 Ford F-150 XL No Tow Package
  Yes, the Plug-N-Tow (R) Vehicle Wiring Harness # 40185 will fit and work on your 2008 Ford F-150 XL with the 4.2L engine and no factory tow package. The Mounting Brackets # 18140 and # 18144 will allow you to secure your 4-way to the receiver cross tube. This will keep the connector protected from road debris and prevent you from having to drill into the receiver or your bumper.
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• Troubleshooting Left Turn/Brake Lamp on Trailer Towed by 2007 Ford F150
  As a first step, you will want to determine if the problem is on the vehicle or in the trailer wiring. Use a circuit tester like part # PTW2993 and test the pin on the trailer connector fed by the yellow wire while the turn signals are activated. This pin should light up with the turn signal and when the brake pedal is pressed. If this pin does light the tester, the problem exists with the trailer wiring. You will need to trace yellow wire that feeds the driver's side turn signal and...
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• Replacing Factory 4-Way on 2006 Ford F-150 with 4-Way/7-Way Connector
  Yes! The Hopkins Plug-N-Tow # 40185 is a plug and play solution for replacing the factory 4-Way on your 2006 Ford F-150. To add a 7-Way/4-Way connector you would then need the Hopkins # 37185. This connects directly to the 4-Way and then has additional wires that you can connect to wiring run to the rear of your pickup for it to be fully functional. You can mount the Hopkins connector with part # C57202 to avoid drilling into your trailer hitch. If you want to permanently install this...
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• Comparing Class III and Class IV Trailer Hitches for a 2008 Ford F-150
  There are going to be several differences between a Class III trailer hitch and a Class IV trailer hitch like Draw-Tite Trailer Hitch, # 41933. One difference is how each attaches to the truck. The Class IV hitch requires more attachment points. I have included a link to the installation details for this hitch below that better illustrates where and how the hitch attaches to the truck. Even though there may be more attachment points, we still have the install difficulty rated at a 3 out...
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• Replacement 4-Way Recommendation for a 2006 Ford F-150
  The Hopkins 4-way part # 40185 has been confirmed as a fit for your 2006 Ford F-150 and would work well for you. It has a ground wire built into the harness connectors so it would not require the use of an additional ground wire.
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• Availability of 4-Flat Trailer Wiring for a 2006 Ford F-150
  If your 2006 Ford F-150 has a factory tow package, the Hopkins Custom Fit Vehicle Wiring, # 40185, that you referenced is the correct harness. If your truck does not have a factory tow package, you will need Draw-Tite Wiring, # 18252. This is a hardwire 4-Flat. You will need access to the taillight wiring. The yellow wire is left turn and stop. The brown wire is running lights. The green wire is right turn and stop. The white wire is ground. If you just need to replace a broken 4-Way,...
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• Troubleshooting Tail Lights Not Working When Brakes are Applied on a Boat Trailer
  It sounds like you have a ground issue on your trailer with new lights. It sounds like when the lights are drawing their maximum amperage (when the brake lights are on) the draw is too much and it is shorting out the lights. I would check the wiring for the lights, especially the ground wires, for loose wiring or not being grounded to a clean surface and fix as necessary. If the grounds are good, the other potential problem is that you might be using too many lights on your boat trailer,...
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• Parts Needed to Add 7 Way Trailer Connector to 2007 Ford F-150 with 4 Way
  In order to add a 7 way to your 2007 Ford F-150, you can utilize the existing 4 way connector like the # 40185, but there will be some additional wiring that you'll need to run in order to add it and have a functional brake controller. You will need to run a wires from the 7 way to the battery for a 12v power supply and into the cab of the truck for the brake controller wire. You'll want to use the # ETBC7 which comes with everything you need to install this including breakers and wiring;...
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• Wiring Harness For a 2004 Ford F-150 New Body Without Factory Tow Package
  For your 2004 Ford F-150 new body, I would recommend using the Tow Ready Custom Fit Wiring Harness, # 118247. This wiring harness will plug into a connector that is located along the drivers side frame rail behind the back bumper and does not require any splicing. I have attached the installation instructions that show where the vehicle side connector is located and where to connect the relay. I have also added a photo showing the location of the vehicle side connector For a smooth factory...
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• Troubleshooting 2013 Ford F-150 Trailer Wiring that Blinkers Stopped Working
  Sounds like you may have some blown fuses under the hood of your 2013 Ford F-150. Check the fuse box for trailer wiring fuse locations and replace as necessary as it sounds like the turn signal circuit fuses have blown. This circuit most likely blew from a short circuit on your trailer wiring. Before you reconnect your trailer wiring I would check the wiring for the turn signals and fix any cut or exposed wire on the circuit that could be causing the short.
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• Installing a Trailer Wiring Harness on a 2007 Ford F-150 with No Factory Connector
  The 2007 Ford F-150 either came equipped, from the factory, with a 7-way trailer connector or none at all. Since you don't have a trailer connector at all on yours you'll need to start by adding a 4-way connector like the Hopkins Plug-N-Tow, part # 40185. It plugs right into the truck's wiring behind the rear bumper. If the trailer you'll be towing has brakes, or you just want the 7-way to be fully functioning, you can then use our adapter kit, part # ETBC7, to convert the 4-way to a...
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• Parts Needed To Add a 7-Way Connector On a 2008 Ford F-150
  If your 2008 Ford F-150 came with the factory tow package you should have a connector that will connect directly to a Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket # PK11893. If your F-150 did not come with a factory tow package the Plug-N-Tow (R) Vehicle Wiring Harness # 40185 will give you a 4-way flat connector and then you will need a kit like our Universal Installation Kit for Trailer Brake Controller # ETBC7 to get a 7-way. In the event you are also needing a brake...
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• Troubleshooting Trailer Stop and Turn Lights
  On a 4-pole trailer connector like # 40185 brake and turn lights are carried on the same wire; yellow for the left brake and left turn light and green for the right brake and right turn light. Running lights for both sides of the trailer are carried on the brown wire. Since you tested your truck connector with a circuit tester like # PTW2993 and found that the correct signals are present on the pins for the yellow and green wires when you activate the brake and turn light functions, this...
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• Troubleshooting 2018 Ford F-150 W/ 4-way Connector That Has Power But Doesn't Power Trailer Lights
  Since your 2008 Ford F-150 has a 4-way connector and you tested it and it has power but your boat trailer lights are not working I would check that the connector does not have corrosion/debris on or in it causing a connection issue. It sounds like your truck came with the factory 4-way connector, and if that is the case then it does not have the correct connector to just replace the connector with a 7-way. Instead you would need to use the # 37185 which will plug into your factory 4-way...
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• Will Curt Trailer Hitch C13352 Fit a 2005 Ford F-150 with Vibration Dampener
  The Curt trailer hitch # C13352 will fit all models of the 2005 Ford F-150 with or without the vibration dampener. I have included a link to the installation instructions for you to view. If you plan on doing some towing, I recommend the etrailer ball mount kit, # EBMK4, which comes with a ball mount, interchangeable ball set, a hitch pin with clip, and a carrying bag. For trailer wiring use # 18252 if the truck does not have a factory tow package. Use # 40185 if you need to replace a...
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• Installing a 7-Way on a 2006 Ford F-150
  I do have a solution for you to install a 7-Way connector on your 2006 Ford F-150 but, as you stated, both the Tekonsha # 118247 and the # 118242 are not compatible. If you have the US Car Connector at the rear of your F-150 then you can simply install the Reese # 74682. If, however, you do not already have a 7-Way that you are trying to replace you will need to install the Hopkins Plug-N-Tow # 40185 as well as the Universal Wiring Kit # ETBC7. The # ETBC7 will plug into the Hopkins...
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• Trailer Lights Stop Working and Blinker Flashes when Connected to a 2007 Dodge Charger
  There are a few things that you can check to determine what the problem may be on your 2007 Dodge Charger. First check the connectors for the harness and where they connect to the vehicle. You may find a bent terminal that you can put back into place. If the trailer has a lot of extra lights then it could be overloading the harness and the electrical system on your 2007 Dodge Charger. The system is rated for a maximum of 1 stop/turn light per side (7.5 amps), and a maximum of tail light...
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• Will The Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector Fit My 2005 Ford F-150
  The Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector for the 2004 F-150, item # 118247, will not work on the 2005 model year Ford F-150. There was a were changes for the 2005 model year and the wiring package was changed on the Ford Trucks. To wire your vehicle for a 7-way connector you will need a 4-way connector first. If your truck has a factory 4- way connector then you will be able to use our Adapter 4 Pole to 7 Pole and 4 Pole, item # 37185, and splice into the vehicle...
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• Which Hitch Will Fit a 2005 Ford F-150 With the Flare Sides and Short Bed
  I can confirm that the Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # C13352 will fit on your 2005 Ford F-150 with the short bed and Flare-sides. I've added a photo that we have on the product page of this hitch installed on the same truck for you to check out. If you also need a wiring harness for this truck, I recommend using the Hopkins Plug-N-Tow # 40185, which will plug into the US Car Connector port under the vehicle on the driver's side and allow you to have a 4 way...
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• Hitch Recommendation for 2005 Ford F-150 Long Bed
  The Draw-Tite Class III 2 Inch Hitch, part # 41549, that you have referenced will fit your 2005 Ford F-150 long bed. This hitch has a gross towing weight capacity of 6,000 lbs and a tongue weight capacity of 600 lbs. I am including a link to the installation instructions on the Draw-Tite hitch. The # 51020 hitch is listed as a Pro Series hitch that fits 1997 to 2004 Ford F-150, so it is not designed for your 2005 vehicle. If you will be towing with this hitch I would also recommend the...
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• Lights Not Working on Camper Towed by 2004 Ford F150 Using 4-Pole To 7-way Adapter
  You said that the adapter is getting power, but is the 7-way on the adapter putting out power on the lighting circuits? You'd need to use a circuit tester like part # PTW2993 on the 7-way as each taillight function is activated, to check it. If the 7-way on the truck tests out okay, but won't work on the trailer (which works on other vehicles) try using the truck with a different trailer if possible. This will 100 percent rule out the truck as being the problem. You still might have a...
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• Brake and Turn Signal Lights do Not Work on Boat Trailer
  Since the trailer lights are working with a different vehicle, that would indicate an issue on the truck side. But it could also indicate a problem with the adapter as well. You will want to check to make sure the adapter is pinned out correctly to match the way the trailer and truck are configured. Make sure the trailer connector on the truck is clean and free of corrosion. On a 7-Way corrosion can also build up behind the connectors where the wires attach. Check the owners manual for...
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• Trailer Left Turn and Tail Light Not Working on a Trailer Towed by a 2006 Ford F-150
  What I think may be happening is there is the absence of a relay that will not allow certain functions to work on the trailer lights if the load on the system is great enough. I would consult the owners manual, find the location of any relays/fuses associated with the trailer wiring, and make sure they are in good working order or add the ones that may be missing. Another issue could be a faulty ground somewhere since your ground test did get it to partially work. You will want to check...
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