See what our Experts say about this Tow Ready Custom Fit Vehicle Wiring

• How to Add a 4 and 7-Way Trailer Connector to a 1999 Ford F-250 with Square Plug
  In order to receive a wiring harness for your 1999 Ford F-250 that plugs into the square tow package wiring port and provides you with both 4 and 7-way trailer connectors you are going to want to purchase the Ford Replacement OEM Tow Package Wiring Harness part # 118243 and then swap out the included trailer connector for the Hopkins Endurance Multi-Tow 7-Way RV and 4-Way Flat Trailer Connector part # HM40950. Unfortunately, we do not offer a wiring harness for your 1999 Ford F-250 that...
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• Where To Install Fuses and Relays From Tow Ready Wiring Harness # 118243 on 1999 Ford F-250 SD
  On your 1999 Ford F-250 Super Duty the two boxes in the engine compartment are the power distribution box (larger box) and the trailer tow relay block (smaller box) which is attached to it. Open the covers to access the relays and fuses. You will need to look in your owners manual and locate the Trailer Tow Electric Brake and Trailer Tow Battery Charge fuse locations and insert the 30 amp maxi-fuses (provided) into them. Also in the owners manual locate the Trailer Tow Backup Lamp Relay...
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• 12-Volt Accessory Power Feed on 2008 Ford F250 is Not Charging Travel Trailer Battery
  In order to activate the 12-volt accessory power feed to the 7-way, there is a fuse and a relay that need to be installed in the fuse box under the hood. Your owners manual or the legend on the fuse box lid will show you the correct location. If the accessory circuit once worked in the past, check for a blown fuse or a bad relay. If the fuse and relay are already in place and are not faulty, please get back with me and will will look into some other less likely possibilities. Keep in...
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• Weak Trailer Brakes on 5th Wheel Trailer Using Factory Integrated Brake Control on 2015 Ford F-250
  The trailer brakes are probably equally as weak with the brake pedal pressed on your 2015 Ford F-250 it just doesn't feel that way because the truck itself is also braking. Nine times out of ten the issue can be resolved by adjusting the brakes on the trailer. When adjusting trailer brakes you will want to hear a slight but constant drag of the pads on the drums when the wheels are turned. To see how this is done check out the video I attached. Fast forward to the 4:30 mark. To adjust the...
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• Parts Needed to Add 7-Way and Brake Controller to 2000 Ford F-350
  First thing your 2000 Ford F-350 needs is the correct 7-way adapter confirmed as a fit for your truck. For that you'd want the part # 118243 which plugs into the factory wiring of the truck and comes with all of the needed relays and fuses. Next you'll need the install wiring adapter as well as a brake controller. For a brake controller I would recommend the Prodigy P3 Brake Controller part # 90195. This is our best selling brake controller because of how well it works and how easy it...
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• Signal Lights Not Working on a 2001 Ford F-250
  I do know that the 7-Way replacement connector # 118242 that we offer for the 2001 Ford F-250 light duty models will include the necessary relays and fuses for installation, so the flasher issue could very well be that you are missing a required fuse or relay. This would be something you could check with Ford. Please note that the 118242 wiring harness is only a fit for the F-250 light duty models. If your vehicle is a Super Duty model and is equipped with a factory tow package, you...
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• 7-Way Trailer Wiring Harness Recommendation for 1999 Ford F-250
  Based on the picture you send in the correct 7-way trailer wiring harness you are looking for is the part # 118243 which matches the connector and is a confirmed fit for your 1999 Ford F-250. I attached an install video for this harness below for you to check out as well.
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• Replacement 7-Way Trailer Connector for a 2003 Ford F-250 Super Duty
  Ford Replacement OEM Tow Package Wiring Harness # 118243 is not confirmed to fit the 2003 Ford F-250 Super Duty. But what you could do is use # 40167 which is a fit. It is basically an in-bed 5th wheel/gooseneck 7-Way that Tees in with the factory trailer wiring. I have linked a video showing how it tees in.
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• Recommended 5th Wheel to Gooseneck Wiring Adapter on 1999 Ford F-250 & 350 Super Duty w/Factory Plug
  Good news, I can help. Your year and model of Ford truck was made with two styles of connectors when they were being wired in at the factory. This means you will need to look at your factory 7-way under you vehicle and see if the back of the 7-way connector has the round adapter or if it has a molded cable that leads back to a rectangular connector on the drivers frame rail. I've attached an image of the two for you to better see. If you have the factory round connector on the back...
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• 1999 Ford F-250 No Trailer Running Lights Even After Replacing 7-Way Connector
  I know you said you checked the fuses, but on your 1999 Ford F-250, the Power Distribution Box and Trailer Tow Relay Blocks are located in the engine compartment near the brake master cylinder, not to be confused with the Fuse Panel located below and to the left of the steering wheel. There is only one fuse that is tied to your trailer running lights inside the Fuse Panel: Fuse Location 28 - 10 amp - Brake Shift Interlock, DRL Relay Coil, Speed Control Module, Backup Lamps, Trailer Tow...
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• Brake Controller And 7-Way For A 1999 Ford F-350 With A 4-Flat
  We can definitely help you out with that, Michael! We technically don't have a full wiring and brake controller package, but we do have the needed parts. You will want to start with the Tekonsha # 118243, which includes the 7-way harness and includes the needed fuses and relays. This is a direct fit part and will take at most 20 minutes to install. Gotta love plug and play stuff. Next will be the brake controller. We have quite a few options for these, but the Redarc Tow-Pro Liberty #...
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• What is the Correct Trailer Wiring for 2007 Ford E-350 Van?
  There is a solution for you but Replacement Harness # 118243 is not a fit for your 2007 Ford E-350. If you have the factory tow package connections you will want the Reese Multi-Plug Wiring Harness for Factory Tow Package # 74682. This harness will give your van a 7-way RV-style and a 4-pole flat connector and plugs into the factory 7-way socket on your E-350. I've added a link to a video review of this part for you to take a look at.
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• How Can I Replace The OEM 7-Way Plug On A 1997 Ford F-250 HD?
  I do have a potential solution for you, but I do not have a 7 way harness that will plug in to the round plugs you described. I recommend using a pre-wired connector like part # 20023. You will have to do a bit of cutting and splicing, and this kit comes with everything needed to do so. This comes with a 7' wire lead, so you may have to cut it down to size. Wire colors are not universal, so using a wire probe like part # PTW2993 can make determining wire function much easier. I have included...
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• Replacement Trailer Connector and Factory Wiring Harness for a 2000 Ford F-250
  The Ford Replacement OEM Tow Package Wiring Harness part # 118243 is indeed a fit for a 2000 Ford F-250. It will replace the 7-way trailer connector as well as part of the trailer wiring harness from the square pigtail onward. I would not have any options to replace any part of the factory trailer wiring harness up to the square pigtail.
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• Replacement 7-Way Trailer Connector for a 1997 Ford F-250 Light Duty
  If you have a light duty 1997 Ford F-250 then you can use # 118242. This harness will not work on Super Duty models. For a Super Duty you would use # 118243. I have included links to the installation details for both harnesses for you to view.
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• Replacement 7-way Trailer Wiring Harness for 2002 Ford F250
  Take a look at the back side of your existing 7-way trailer connector. There should be a round plug connected to the back of the actual trailer connector. You should be able to slide out the gray catch on that connector then remove it. That round connector is what would plug into the # 74682 Reese Multi-Plug Wiring Harness you'd looked at. Further back on the frame rail is where the rectangular connector plugs in. Tow Ready tells me that their # 118243 which features the rectangular connector...
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• Replacement 7-Way Trailer Connector for 2001 Ford F250
  Since you're needing everything from the rectangular connector back, we have exactly what you're looking for. You'll need the Tow Ready # 118243. Once you unplug the existing gray plug, this connector assembly will take its place. I've also linked you to an install video. You'd then use an adapter like # PK12716 if you needed to tow a trailer that had a 4 pole trailer connector.
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• Installing 7-Way Trailer Connector on 2001 Ford F350
  If your F350 only has the 4-pole trailer connector, chances are that it is not equipped with the necessary relays that are factory installed when the vehicle is equipped with the factory tow package. The 7-way wiring harness, part # 118243 includes the necessary relays and fuses to activate the tow package so that the running lights will function for you. The relays would install in the large fuse box under the hood, and the fuses would install in the smaller adjacent fuse box. Your owners...
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• Location of Back Up Lamp and Battery Charge Relays in 1999 Ford F250 Super Duty
  In my research, I managed to download a copy of the Owners Manual for the 1999 F250 SD. I found that the Trailer Tow Back Up Lamp Relay is in position # 38 and the Battery Charge Relay is # 39. According to the diagram of the various locations in the power distribution box, location # 38 and 39 are not shown. The manual goes on to say that 38 and 39 are located in a smaller box that should be found adjacent to the larger box (closer to the brake master cylinder). I also found the same...
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• No Power to Trailer Running Lights on 1999 Ford F-250
  I checked the owner's manual for a 1999 Ford F-250 and it shows that the trailer park lamps are controlled by the number four fuse in the power distribution box under the hood which is a twenty amp. If the fuse checks out, there is also a relay to check located in the same power distribution center but at number thirty-eight. If the fuse and relay are good then you'll want to check the trailer connector, this may need to be replaced for which we offer the Ford Replacement OEM Tow Package...
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• Replacement 7-Way Trailer Connector for a 2002 Ford F-250 Super Duty
  I can only confirm 7-Way trailer connector # 118243 as a fit for up to 2001 Ford Super Duty trucks. For a 2002 what you can do is use harness # 40167 which is designed as in-bed wiring for a 5th wheel or gooseneck trailer but would work just as well to add a 7-Way at the back of your truck.
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• Adding a Functioning 7-Way Trailer Connector to a 1999 Ford F-350 with or without Factory Connector
  It sounds like your 1999 Ford F-350 either came with a factory 4-Way or no trailer connector at all. A dealership might be able to tell you what equipment the truck had based on the VIN so that is one thing you can try. Even if it came with a factory 4-Way you can still install a 7-Way with relative ease. First, follow those 4 wires you mentioned forward under the truck. If they plug into another square/rectangular connector then you can use 7-Way # 118243 which comes with the fuses and...
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• 7-Way Trailer Connector and Brake Controller Installation on 1999 Ford F-350 Super Duty
  For starters, you'll want to follow your existing 4 pole if it's the factory trailer connector. If it's plugged into a rectangular connector, you can use part # 118243 for a plug and play installation. The connector will be behind the rear bumper near the driver's side frame rail. Unplug the connector for the 4-pole and plug in the # 118243. Be careful not to damage the tabs on the connector. If it's a round connector, you can use the # 37185 adapter. Plug the existing 4-pole into the...
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• Parts Needed to Add a 7-Way Trailer Connector to a 1994 Ford F-350
  From what I was able to find, you will need to hardwire in a 7-Way using a 4 and 7 Way Installation Kit, # ETBC7. The Replacement OEM Tow Package Wiring Harness, # 118243, does not fit the 1994 Ford F-350. I have included a link to an FAQ and a link to a video showing a typical installation of the ETBC7 for you.
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