T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

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• Wire Color Functions Typical of 7-Way on Trailer Red, Black, Blue, and Green
  For 7-way wiring typically the red wire is for the left turn/stop signal, the black wire is the 12 volt power accessory circuit, the blue is for brake controller output, and the green is for running lights.
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• 4-Pole Wiring Harness for 1999 GMC Jimmy
  If your 1999 GMC Jimmy does not have a round U.S. Car connector tucked up under the bumper or spare to allow you to plug in a part like # 118384, or a bundle of wires you can connect to a 4-pole part like # HM41225 you can still install a trailer harness by splicing to the signal wires at one of the tail lights. The best option is to hard wire a universal powered harness like # C59496 which will isolate and protect the truck's wiring from any potential shorts on the trailer. This is a...
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• How To Use Both the 7-Way and 4-Way On a 2021 Chevrolet Silverado 1500 at the Same Time
  The the factory style 7-Way/4-Way # HM40975 on your 2021 Chevrolet Silverado you are only able to access one of the connectors due to the folding caps. We do have the T-One Vehicle Wiring Harness # 118384 which will connect in line of the factory wiring and connector giving you a separate 4-way flat connection. This is great if you have a Light Bar # RA960134 or need the additional connector while hauling a slide in camper with a trailer.
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• Availability of Local Installer for Draw-Tite Trailer Hitch Receiver on 2012 Jeep Grand Cherokee
  We can help with a local installer for the # DT38MR on your 2012 Jeep Grand Cherokee Laredo. I have attached a link below which will take you to a list of professional installers near Columbia, SC. You can change the zip code if yours is different. If you plan on doing some towing with your Jeep you will also need wiring. If you do not have the tow package you need the # 118425 and if you do have the tow package the # 118384. The wiring harness will provide you with a 4-way to power your...
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• Troubleshooting Brake Controller Not Showing Connection
  Have you checked the pins of your 7-ways for corrosion? Typically when this exact problem occurs on trailer wiring the issue is that there's just a bit of corrosion on the 7-way pins which then prevents the output circuit of the controller from making a solid connection. If you take some sandpaper to the pins of the connector you should see the circuit make connection again. I also attached a link to a page that has troubleshooting info on brake controllers for you to check out as well.
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• How to Wire in Dual 4-pole Vehicle-Side Trailer Connectors on RV
  There are several ways to have dual 4-pole flat vehicle wiring on your RV, depending on how the RV wiring is set up. If the RV uses a round U.S. Car connector at the back of its 7-way you could use two of part # 118384 in a daisy-chain set up. This would provide two 4-poles and keep your 7-way active. This is a plug-and-play option. If you don't mind a bit of cutting and splicing you could tap into the wiring that leads to the RV 7-way and splice in two of an item like # HM48030 using...
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• Parts Needed to Tow Trailer with 2012 Buick Enclave
  For a trailer hitch for your 2012 Buick Enclave the Draw Tite hitch part # 75528 is a confirmed fit and will work well. I attached an install video for more info on this. Then for trailer wiring all you'd need is the # 118450 to provide you with a 4-way. The part # 118384 would be the correct kit if your vehicle came with a 7-way and you needed to convert it to a 4-way but it sounds like you don't have the 7-way wiring at this time. If you wanted to do some towing you might be interested...
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• Installing 4-Pole/7-Way Trailer Connector on 2020 Toyota Tacoma
  We don't offer a 7-way trailer connector that would plug into the connector you mention, but we do have an option that would provide you with a 7-way and a connector for a brake controller. I'd recommend the Tekonsha # 22117 which would plug inline at the connection between the vehicle's taillight wiring harnesses and the taillight assemblies. As outlined in the linked installation instructions, you'll run the body harness to the front to connect at the battery power and ground, with a...
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• 4-Way Trailer Wiring Harness For 2015 GMC Sierra 1500 Base
  Yes, to power trailer lights with your 2015 GMC Sierra 1500 you will need a 4-way flat trailer connector, and your Sierra should have a round plug under the truck and behind the bumper like you see in the accompanying photo (though it won't be hanging down exactly like that). Assuming you do have that plug, you can use a simple plug-in connector, which is the following part number: - T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118384 And to prevent corrosion on the...
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• 7-Way Recommendation for Attaching to Port in Rear Bumper of 2011 Chevy Silverado
  We have the style of 7-way that would fit the bumper port you have on your 2011 Chevy Silverado but it does not have a 4-way built into it. You'd want the part # PK11916 for a 7-way that fits directly. You could also install the part # 118384 to give you a separate 4-way as well though.
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• 4-Way Recommendation for 2014 Chevy Silverado for Wiring Up Strip Light
  For a 4-way harness that will plug inline with the 7-way you have at the rear of your 2014 Chevy Silverado 2500HD you would want the Tekonsha part # 118384 which will do just that.
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• Fuse Locations for Trailer Running Lights on 2011 Ram 2500
  I took a look at the online version of the owner's manual for your 2011 Ram 2500 and found a couple of fuses you will want to check inside the power module located in the engine compartment. There should be a 40 amp green fuse located in the J01 position and a 20 amp blue fuse in the J14 position. Both of these fuses are related to trailer lights so you will want to check to make sure they are present and in good condition. If the fuses are good and you are having issues with the trailer...
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• 4-Way Trailer Wiring Harness Recommendation for a 2013 Audi Q7
  Your 2013 Audi Q7 should have a factory 7-way installed on it. To install a 4-way inline with the 7-way harness you would want the # 118384. Or for a 4-way adapter designed to plug into the 7-way you would want the # PK12716.
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• Recommended 7-Way and 4-Pole Trailer Wiring Harness for 2018 Honda Pilot
  The easiest way to have both a 4-pole and a 7-way trailer connector for your 2018 Honda Pilot would be to begin by installing a 7-way trailer connector, part # 118286 and then use an adapter like # PK12716 when you want to tow a trailer with a 4-pole connector. I've linked to videos for both these products. There's an alternative if you'd rather not mess with an adapter. You can use a T-harness like part # 118384 which would plug inline between the 7-way and the harness provided by the...
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• What is the Difference Between CURT Class III Trailer Hitches for a 2011 Jeep Grand Cherokee
  The main difference between CURT Trailer Hitch C13075 and # C13065, is the cross tube. On C13075, it has a round tube and the receiver extends straight out from the side of the tube. This requires a bend in the cross tube which makes more of the hitch visible beneath the vehicle. Hitch # C13065 has a square cross tube. The receiver is welded to the bottom of the square tube and this makes only the receiver visible beneath the rear of the vehicle. The rest of the hitch is hidden behind...
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• How to Add Second Wiring Harness to 2018 Toyota Tundra to Power Tailgate Light Bar
  If your 2018 Tundra has wiring that uses a round U.S. Car type connector (like the item shown in the linked photo) then you can easily piggyback a second wiring harness and have both remain active. Most tailgate light bars use a 4-pole flat connector so if this is what you have all you need is part # 118384 which will simply plug in between your 7-way socket and the U.S. Car connector that connects to the back of it. Please check out the linked install video. I strongly recommend using...
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• 7-Way to 5-Way Adapter Recommendation
  We have just the adapter you would need. Part # A75TB will convert a round 7-way to a 5-way.
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• Trailer Lights Not Working When Using Tow Ready Wiring Harness, # 118384, On 2007 Nissan Titan
  The Tow Ready Wiring Harness, # 118384, is for a Nissan Titan with the factory 7-Way trailer connector. It will plug into the back of your 7-Way on your vehicle and the other end will plug into the tow vehicles trailer harness connector, behind the bumper on the drivers side. This harness does not come with relays because they are usually installed already when the factory 7-Way is on the vehicle. You might check the accessory fuse block to make sure you have the three relays installed...
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• Troubleshooting Trailer Wiring with Lights Not Working Completely
  I think I can help but it still sounds like a ground connection issue. Here is why...whenever some functions work and others do not, it is either a connector issue, a short in the wire, or a weak ground. Since everything works on both the trailer and truck when tested independently, and when you partially plug in the system it seems to work better than fully plugged, it definitely sounds like a ground issue. Since you have already cleaned up your grounds, I recommend moving them. Make...
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• Heavy-Duty Trailer Hitch Recommendation for 2009 Chevy Traverse
  There is one option for a trailer hitch that stands out for your 2009 Chevy Traverse, since you mentioned wanting a heavy-duty hitch, and that is the Draw-Tite Max-Frame Trailer Hitch Receiver # 75528. This hitch has the most robust capacity of 750 lbs tongue weight along with 5,000 lb towing, which is a testament to its strength. It will also be a smooth installation on your '09 Traverse without any type of drilling into your frame required. I have added a link below to a video installation...
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• All Lights Work But Trailer Showing Not Connected on 2013 Ram 3500 with Factory Brake Controller
  You're likely correct that this issue is with the truck, and I know that with the first generation of the factory integrated brake controllers on the Ram trucks there were a lot of issues like this that people have seen. You also mentioned that you changed the 7 way connector on your truck, so corrosion on the connection isn't going to come in play since it's new. I would start by checking the ground wire connections on the trailer and your vehicle's 7 way connection. You'll want to make...
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• No Brake or Turn Signals With Trailer Wiring Harness On a 2007 GMC Acadia
  I am not sure which exact trailer wiring harness you are using but if you have one that plugs into the factory tow package plug like the T-One Vehicle Wiring Harness part # 118384 for example then the issue you are having would lead me to believe that you are missing some fuses/relays or they are blown. I took a look in your owner's manual and it lists two fuses for the stop/turn signal lights, "LT TRLR STOP/TRN" for the left stop/turn circuits and "RT TRLR STOP/TRN" for the right stop/turn...
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• 4-Pole Trailer Wiring Harness for 2002 GMC Sierra
  If your 2002 GMC Sierra does not have a round U.S. Car connector to accept a 4-pole trailer wiring harness like # 118384 then it should have a bundle of wires tucked up above the spare tire (see the linked article, step 3, section B). The yellow wire is the left turn and brakes, dark green wire is the right turn and brakes, brown wire is for the taillights, and white is the ground. To these you can attach a 4-pole plug like # 18252, connect the wires color for color with heat shrink butt...
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• Recommended Hitch to Fit 2011 Chevy Silverado 1500 with Tommy Lift
  I may have a solution for you, but the Tommy Lift does present some issues and most hitches are going to be excluded from fitting on a 2011 Chevy Silverado 1500. However, I talked to my contact over at Curt and he confirmed that the Curt # 13339 will work with your Tommy Lift installed. This will give you a 2" receiver for your Silverado and Curt hitches are well known for their durability because of the thicker powder coat they use, so it's going to stand up to nicks and scratches a lot...
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