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

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• No Power on the Running Light Circuit on a 2000 Chevy Silverado z71 Towing a Boat Trailer
  There is a possibility of a relay or fuse related to tow package wiring either in the power distribution box or in the in-cab fuse panel that you can check. Look in the vehicle owners manual for all fuse and relay locations and check those. If the running light circuit shows no power on the 7-Way on the truck then that does eliminate the problem as being with the trailer. On the chance that it may be related to the trailer, it would most likely be a ground issue. You can check all the...
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• Locating and Repairing Ground Problem in Wiring of Boat Trailer
  It sounds like you are on the right track with the ground problem. Check your trailer connector on the Grand Cherokee, and make sure the white wire is grounded to the frame of the vehicle. Even though your trailer works fine when connected to your truck, you still might have a weak ground on the trailer. It is not unheard of that a given trailer will work fine with one vehicle, but not with another. Check the grounding point where the white wire from the connector attaches to the trailer...
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• Installing Pilot Automotive LED Fire Strip # 36049 on 2002 Chevy Silverado
  What you are describing is almost certainly a ground problem. If you are hardwiring the Pilot Fire Strip into place, you will need to make sure that BOTH ground wires are attached to clean bare metal on the truck frame or chassis (see photo). Leaving the 4-pole connector on the Fire Strip and installing a 4-pole connector on your truck like part # 118384 would would be your best bet, as there would be no cutting or splicing required.
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• Installation Instructions for the Tow Ready 4-Pole Harness for a 2010 Toyota Tacoma
  Under the rear bumper, near the driver side of your 2010 Toyota Tacoma there will be a plug with a cap on it that you will remove and plug the 4-Pole Trailer Adapter # 118384 into. I attached installation instructions and video for this product for you to check out that shows you how to install it.
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• Trailer Wiring Harness Recommendations for a 2012 Jeep Liberty without a Tow Package
  Part # 118384 is designed for Jeep Liberties with a factory tow package. Without the factory tow package, not all functions will work. In order to make it function, you will need to head to your dealer and have them re-flash either the Body Control Module BCM or Power Control Module PCM to fully activate that port. Either way you would not need a relay.
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• Is a Tail Light Converter Needed When Using a # 118384 with a Trailer With Combined Tail Lights
  The 4-Pole Trailer Adapter # 118384 that you referenced will not require a converter to be used with your trailer that has combined tail lights. The 4-way will have the correct voltage on the 4 circuits to be used with your trailer. GM will have already converted the signal from the separate signals like what are on your 2006 Chevy Silverado tail lights to a combined tail light circuit.
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• No Tail Light Function on 16 ft Car Hauler Towed by a 2004 GMC Sierra 2500
  Based on your description, it sounds like your truck has a 7-way trailer connector. Anytime your trailer lights are not functioning properly, it is best to isolate the issue to either the truck or trailer. It sounds like you have already started some of the troubleshooting, but I will list the steps from the beginning just in case. The first and easiest step to take is to check the vehicle side and trailer side connectors for any corrosion. You said your wiring looks new, so this may...
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• Troubleshooting Factory Brake Controller of 2015 Dodge Ram 1500 Not Showing Voltage on 7-Way
  Your problem could be as simple to fix as cleaning the pins on the 7-way of the trailer and truck. It's very common that corrosion or dirt prevents the brake controller output circuit from making a solid connection and preventing the controller from being able to work. Also, volt meters typically don't put enough of a draw on a brake controller circuit for it to register as a trailer being connected and allow it to work properly. Try cleaning the pin of the connector and then inspecting...
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• Interior Lights In Horse Trailer Not Working After New Tow Vehicle
  If the only thing that has changed on your trailer is that it is now being pulled by a different vehicle then that is most likely where the issue resides. Generally speaking, the interior lights are powered by either a 12 volt battery on the trailer and is then charged by the 12 volt power circuit on the 7-way or they are just ran directly to the 12 volt power circuit on the 7-way. Therefore, the issue you are having is most likely that the 12 volt power circuit on the 7-way is not active...
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• Troubleshooting Running Lights No Longer Working on Boat Trailer
  It sounds like there might be a weak or bad ground on the trailer wiring that maybe just took a couple of rides to fully present itself. The first thing I recommend doing is simply inspecting the 4- or 5-Way connector on the boat trailer. Look for any corrosion or debris inside the pins that needs to be cleaned out. Also inspect the wiring right behind it to make sure nothing is pinched and they are all fully secured to the connector. Next check the harness' main ground and make sure it's...
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• Fuse Installation to Activate 4-Pole Trailer Wiring in 2009 Chevy Silverado 1500
  If your 2009 Silverado has the factory tow package it could still be missing the fuses required to activate the tow wiring to which you connected part # 118384. This part is intended for vehicles that have the factory tow package and 7-way trailer socket. Install any missing fuses/relays that are labelled trailer or tow. Be sure to use fuses of the correct amperage value for each location in the power distribution box under the hood. The fuse locations you referenced, right stop/turn and...
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• 4-Pole Trailer Adapter for GM trucks with Factory 7 Way for a 2007 Chevrolet Silverado
  You are exactly correct, the 4-Pole Trailer Adapter for GM trucks with Factory 7 Way, part number 11838, will provide you with a 4 way connector. The 7 way will still function as well. The adapter would install inline between the two sockets, just as you describe.
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• No Running Light On My Trailer When Connected To My 2011 Ram Sport
  Under the hood of your 2011 Dodge Ram there should be a 20 amp fuse for the trailer running lights. It is a fairly common problem with your generation of truck that fuse ends up blowing. There should be a legend on the fuse box or you can find it in your owners manual that details where all the different fuses are. Use that to find the correct fuse and replace it.
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• Trailer Running Light Fuse Location 2016 Ram 3500
  I pulled up a copy of your owners manual online and it looks like F29 is the fuse slot you are looking for for the trailer running lights circuit. This will be a blue 20 amp cartridge fuse.
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• 4-Way Recommendation for Installing Light Bar on 2015 Nissan Frontier with 7-Way
  Sounds like your 2015 Nissan Frontier has a 7-way installed on it already. What you would need to also install a 4-way with it is the part # 118384. This will install inline with your 7-way and give you a 4-way for the light bar.
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• No Power on Tail or Brake Light Pin of Part # 118384
  If you are using the # 118384, and are not getting any signal on the connector for the brake or the tail light, you most likely have blown or missing tow package fuses. These fuses are typically located in a fuse box under the hood, but their location can vary according to the year, make and model of your truck. Your owners manual should have a fuse diagram showing which fuses protect which circuits, as well as the location of the fuses.
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• Troubleshooting 2011 Dodge Ram No Running Lights on Trailer, Brakes and Turn Signals OK
  Under the hood of your 2011 Dodge Ram there should be a 20 amp fuse for the trailer running lights. It is a fairly common problem with your generation of truck that fuse ends up blowing. There should be a legend on the fuse box somewhere that details where all the different fuses are. Use that to find the correct fuse and replace it.
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• Troubleshooting Trailer Lighting That Stops When Headlights of Vehicle are Turned on
  What you described is the classic insufficient ground scenario so finding a way to improve the grounds will fix the problem. Try improving the connection of the main ground wire of the trailer wiring harness. Make sure it is attached to a clean metal surface. Or you can run all of the trailer wires back to the main ground. This is actually the ideal solution. But you can also check the current grounds for the lights to make sure they are making a solid connection to a clean metal surface.
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• Does T-One Vehicle Wiring Harness 118384 have Combined Brake Light and Turn Signal Functions
  Tow package wiring on a vehicle is already converted to combine the brake and turn signal lights onto the same circuit which is what trailers use. Wiring harness # 118384 Tees in line with the factory 7-Way wiring and provides a 4-Way flat connector in addition to the factory 7-Way so when using it the brake and turn signal lights will also be on the same circuits.
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• Will Tow Ready T-One Connector with 4-Pole Connector Fit 2008 Chevrolet Silverado
  The Tow Ready T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118384 is confirmed as a fit for the 2008 Chevrolet Silverado. This 4-Way trailer connector will plug into your Silverado's wiring behind the factory 7-Way connector at the rear of the vehicle. I've attached an installation video of this connector on a similar vehicle for you. I've also attached links to the wiring fitguide and the fitguide product categories for your 2008 Chevrolet Silverado for you.
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• Installing the Tekonsha T-One # 118384 on a 2010 Jeep Liberty
  If you check out the linked installation video of the Tekonsha T-One # 118384 being installed on a 2012 Jeep Grand Cherokee you can see where the plug is located. If the directions for your wiring harness say that the connector should be located on the driver side of the bumper then this is where it should be for your 2010 Jeep Liberty. Please note that not all 2010 Liberties have the US car connector. If that is the case for your Liberty then you will need to install the T-One # 118554...
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• Installed 7-Way and 2012 Jeep Grand Cherokee Dealer Reprogrammed But No Brake Lights/Turn Signals
  If your 2012 Jeep Grand Cherokee did not come with a factory installed 7-Way then if you plug one into the wiring at the back of the Jeep the 7-Way would not function. Like you already did, you would go to the dealer and have them reprogram the computer to get the newly installed 7-Way to function. If everything was installed properly then it should work. If not then they may have made a mistake in the reprogramming process. Or, it could be that there is a fuses or fuses or even relays...
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• Drivers Side Brake and Turn Signal Lights Not Working on a 2012 Ram 3500 4x4 Cummins Diesel
  When a light is only working periodically that is usually an indication of a weak ground connection or a loose wire. But on a newer truck like your 2012 Ram 3500 this does not seem likely. The trailer connector having power is not surprising. That means that the trailer wiring is independent of the truck lights. I would start at the front and work my way back. You could have something going on with the fuse and/or relay (if equipped) on that side. Use the truck owners manual to find all...
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• Keep Blowing 20 Amp Running Light Fuse when Connecting Trailer to 2012 Ram 5500
  There is a short circuit somewhere that is causing the fuse to blow. A short would cause excessive power draw. Since it only happens when you plug in a trailer it is likely that the short is in the trailer connector or the wiring to it. You will need to make sure that there is no corrosion build up on the pins of the connector but also on the inside of the connector where the wires attach. Also check for any frayed or pinched wires touching metal and fix as needed.
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