view cartView Cart

CALL NOW - 800-298-8924

Product Experts Available Now!

Free Shipping on Orders Over $99




Toyota Tundra Trailer Wiring

change vehicle

Select Toyota Tundra Year

Trailer Wiring

Custom fit Trailer Wiring for your:



Available Years for Trailer Wiring



Toyota Tundra Trailer Wiring Harness

Make installing a trailer wiring harness on your Toyota Tundra as easy as possible with a custom fit wiring harness from Draw-Tite, Curt, Pollak, Tow Ready, Bosal, or Hopkins. A custom kit will eliminate or reduce the need to cut and splice wires in your Toyota Tundra while helping to protect sensitive electronics.




What our customers are saying:

I was working on a tight schedule with the need to get my products for a camping trip. I was nervous about placing the order with my deadline so close but the sales associate assured me that my products would arrive via regular mail the day before I needed it I went with regular mail because express mail was almost the same price as the cost of the product. To my relief, my products arrived on time as promised and I am very happy with what I ordered after having used it!

Ed

Hayward, CA


Wiring Adapter Fitguide



   Trailer Connectors and Adapters


   Wire and Wiring Accessories




Trailer Wiring Manufacturers






Toyota Tundra Custom Fit Vehicle Wiring Videos

Trailer Wiring Harness Installation - 2001 Toyota Tundra

Today on our 2001 Toy0ta Tundra, we'll be installing the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, part number C55378. We'll begin here underneath the rear of the vehicle, over here on the drivers side. You'll see that there's a large gray plug right here that actually has an end cap in it. To unplug this, we'll simply push in on the locking tab and gently pull downward. This is the wiring that we'll be tying in the new Curt T-Connector wiring harness to. Now for the box and the 4-flat end of the wiring harness, we're going to route it up here through the frame. This will allow us to protect the box, as well as give us a good flat area to secure the box using the 2-sided tape. We'll go ahead and use a little bit of rubbing alcohol to clean the surface first, before we attach the 2-sided tape to the box, and then attach the box to the frame of the vehicle. We'll go ahead and plug in our connection from the new wiring harness to the factory wiring harness, making sure that we hear the locking tab click into place. We'll go ahead and use a few zip-ties to secure up any excess wiring. Now for the 4-flat, we'll route it down here to the center of the hitch area. We'll then take the cover for the 4-flat, put it on the end of the 4-flat, and then loop it through the safety chain hole on the hitch. Once that goes through, we'll take the end cap and put it back over the end of our 4-flat.



Hopkins Endurance Fifth Wheel Wiring Harness Installation - 2012 Toyota Tundra

Today on our 2012 Toyota Tundra, well be installing the Hopkins Endurance fifth wheel and gooseneck 90 degree wiring harness, part number 41157.To begin our install, well first move into the truck bed to mount our new seven pole connector. Here on the drivers side is a great location. In order to install our new seven pole connector, well first need to cut out the hole in the bed side using the 1 inch hole saw bit as per the instructions. Well go ahead and cut it out now.Next we will take the new wiring harness and feed it from underneath the vehicle up through the cut out hole. Now we have access to it in the truck bed, were going to go ahead and apply some dielectric grease to the connector as provided with their install kit. Then we can go ahead and plug the wiring harness into the back of the new seven pole connector.To mount our seven pole connector here to the side of the bed, well use the self-tapping screws provided with the install kit.



Trailer Wiring Harness Installation - 2008 Toyota Tundra

Today, on this 2008 Toyota Tundra were going to install part #: HM11143395 from Hopkins. This Hopkins tow package wiring kit for Toyota Tundra. To help us install this kit were also going to use part #: 18140 from Tow Ready. This is their universal mounting bracket. Well start off that part first. Well go ahead and take it and attach it to the top of the hitch and then clamp it in place.



Trailer Wiring Harness Installation - 2001 Toyota Tundra

Today on our 2001 Toyota Tundra well be installing the Tow Ready T1 connector, part number 118378. First well need to go ahead and open up the hood to the engine compartment. Well remove the negative battery cable, disconnecting the vehicles electrical system. Were going to go ahead and use the Power Dome LT, part number WC2464 jump box. We can maintain electrical system current so that we dont lose any of the preset functions of the vehicle. To do this well plug the black wire onto the negative battery cable as we remove from the battery, or a ground of the vehicle as seen here on the fender, and then the red clamp well route to the positive battery terminal, or cable as we remove it from the battery.



Trailer Wiring Harness Installation - 2002 Toyota Tundra

All right today on this 2002 Toyota Tundra were going to install part number 118378 from Tow Ready. All right, the first thing we need to do is go ahead and install a fuse holder by the battery. All right, now therell be a gray connector between the battery and the fender. Well take the cap off, well install our wire harness. Now, in some vehicles you can see these connectors and some dont, so it may be a good idea to go ahead and move the battery out of the way to find it. And also, some vehicles have a connector already installed to the hot lead to the battery.



Trailer Wiring Harness Adapter Installation - 2010 Toyota Tundra

Today on this 2010 Toyota Tundra pickup, we are going to install part number 37185. Also, we are going to use an install bracket, part number 118136 from Tow Ready. In this case what we are going to do is we have our factory 4-pole lose from the vehicle. Our 7 and 4-pole down to our 4-pole adapter is going to go on the end of this. Now we will take a few minutes to do some test fitting here because it is kind of close between the hitch and the bumper. So, we use our bracket. We can mount it this way or we can mount it this way. And we can mount it just like this. It does stick out kinda far. So what we can do is we can just take this bracket and flip it around. And if we are installing it backwards, it actually recesses a little bit. It sits a little tighter against the hitch and it is not the only thing that is sticking out further than the hitch itself. 1:00





Toyota Tundra Custom Fit Vehicle Wiring Questions and Answers


  • Replacing a 7-Way with a 7 and 4-Way on a 2014 Toyota Tundra
  • Trailer wiring harness # HM11141835 is designed as a replacement for a 2014 Toyota Tundra that came with a factory 4-Way. There isn't an additional connector if your truck already has the 7-Way. A simple solution would be to replace the factory 7-Way with # HM11143395 which is both a 7-Way and a 4-Way so you would have access to both types of connectors.
    view full answer...

  • Will the Curt T-Connector Wiring Harness # C55367 Work with LED Trailer Lights
  • Yes, the Curt T-Connector Wiring Harness, # C55367, will work with LED trailer lights. This wiring harness uses a powered converter which means it connects to a dedicated 12 volt power source from the vehicle battery and pulls power from the battery rather than the tail light circuits. This not only protects your truck's electrical system, but it also eliminates any potential problems from the reduced resistance from the LED trailer lights.
    view full answer...

  • Parts Needed to Install a 7-Way Trailer Connector on a 2001 Toyota Tundra With Existing 4-Way
  • Your best option is to install our Universal 7-Way and 4-Way Installation Kit, part # ETBC7. There are no plug-in style 7-way trailer connectors that will replace the Tow Ready harness on your truck, but the ETBC7 will use your existing 4-way and provide the additional hardware and wiring needed to have a fully functioning 7-way trailer connector. I attached an installation video on a 2002 Toyota Tundra to give you an idea of what will be involved with the installation. The installation...
    view full answer...

  • Will 5th Wheel/Gooseneck Wiring Harness 20110 Fit a 2014 Toyota Tundra
  • If you look at the back of the 7-Way trailer connector on your 2014 Toyota Tundra and it has a round connector that can be pulled off of the back of the trailer connecter then you can use wiring harness # 20110. I have linked a video that shows how this harness installs so you can see what I mean about the back of the connector. The relevant part of the video takes place at about the 56 second mark. I am almost positive that it will fit if the truck came with a factory 7-Way.
    view full answer...

  • Trailer Wiring Harness Recommendation for a 2000 Toyota Tundra
  • Yes, the Curt Wiring harness part # C55367 that you referenced is confirmed to fit all model 2000 Toyota Tundras so it should work very well for you. I attached a set of installation instructions for you to check out also.
    view full answer...

  • T-1 Trailer Wiring Harness Recommendation for a 2000 Toyota Tundra
  • Yes, the Curt Wiring harness part # C55367 that you referenced is confirmed to fit all model 2000 Toyota Tundras so it should work very well for you. I attached a set of installation instructions for you to check out also. You will see that this product installs by plugging inline with the taillight assemblies of your vehicle.
    view full answer...

  • 5th Wheel/Gooseneck Wiring Harness Recommendation for a 2014 Toyota Tundra
  • I did some checking and it looks like the recommended fifth wheel gooseneck wiring harness for your 2014 Toyota Tundra would be the 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole Plug # 54701-003. Check out the review video I attached for this product as well.
    view full answer...

  • Will Hopkins Tow Package Wiring Kit # HM11143395 Work with a Canadian Truck
  • I spoke with my contact at Hopkins who said this part is designed to fit the 2007 to 2014 Toyota Tundra with the factory 7-way. If your 2014 Tundra came equipped with the factory 7-way plug -- the same configuration as in the photo I have attached -- then # HM11143395 is the part you want. My contact said Hopkins has not had any fit issues with Canadian models.
    view full answer...

  • Does Curt T-Connector Vehicle Wiring Harness # C55378 work with LED lights
  • Yes, the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C55378 that you referenced would work well with LED lights on your vehicle or trailer lights. I attached an install video for this wiring harness for you to check out also.
    view full answer...

  • Running Light Circuit on Output Side of Curt Wiring Harness Has No Power on 2000 Toyota Tundra
  • Use your tester to test the brown wire going into the converter for wiring harness # C55367. If there is no power going into the box then there is an issue on the vehicle wiring. There could be a blown fuse for the trailer running lights. Use the vehicle owners manual to find if there is a fuse for that function and its location. If there is no fuse for that function or if there is power going into the converter but not coming out then that indicates a problem inside the converter and...
    view full answer...

  • Replacement 7-Way Wiring Harness for a 2007 Toyota Tundra
  • Since your truck has a 5 pin plug and a 2 pin plug for the trailer connector, you will want the Hopkins Tow Package Wiring Kit, # HM11143395, that you referenced. Toyota made a change to the tow package wiring during the 2007 model year, so some 2007 models, like yours, are wired like the 2008 - 2010 models.
    view full answer...

  • Replacement 7-Way Trailer Connector for a 2004 Toyota Tundra with Factory Tow Package
  • I have included a picture for you that will help. On your 2004 Toyota Tundra, find the connector under the truck that # HM43385 would plug into. Then use a circuit tester, # 3808 if you do not have one, to test the pins on the 3-pin part. The pins should be a mirror opposite of what you see in the picture. If they are not you would need to use # 20137 instead. The wiring harness part of either of these connectors should be plenty long enough to mount the connector where you need to....
    view full answer...

  • 2007 Toyota Tundra 4-pole to 7-Way Wiring Installation
  • Since your Tundra has a 4-way connector you can use a Universal Installation Kit # ETBC7 to convert your existing 4-way to a 7-way connection. Some vehicles are equipped with a T-One Connector that is very easy to use and you simply plug the connector into the existing wiring harness plugs on your vehicle and then you can establish a 7-Way connector. Currently for your 2007 Toyota Tundra we do not have a compatible fit for a T-One style connector and your vehicle. The new 7-way will...
    view full answer...

  • 7-Way Wiring Harness Recommendation for a 2012 Toyota Tundra with a Factory 4-Way
  • I wish I had a plug and play 7-way that would install on your 2012 Toyota Tundra that would replace your 7-way. But you will need to hardwire in a 7-way. If you only need a 7-way for a trailer without trailer brakes you could get away with just getting a # 37185 and just plugging in your 4-way to it. If you need to install a brake controller and operate trailer brakes you will need to get a Brake Controller Installation Kit part # ETBC7. This comes with everything you will need to install...
    view full answer...

  • Replacement 7-Way and 4-Way Trailer Connector for a 2007 Toyota Tundra
  • We do have a replacement 7-way and 4-way trailer connector for the 2007 Toyota Tundra, but before we can determine which harness will work for your truck, we will need to know what type of plugs your trucks tow package wiring requires and how the connectors are wired. Unfortunately, Toyota decided to wire this truck a number of different ways. The Tundra had a generation change between 2006 and 2007 and this caused some discrepancies in the wiring. Your factory 4-way and 7-way trailer...
    view full answer...

  • Installing OEM Replacement 7-Way Trailer Connector on 2007 Toyota Tundra
  • The correct replacement 7-way for your Tundra should be part # HM43385. You can confirm this by examining the connectors under the truck that the connector would plug into. One connector should accept 4 pins, the other three pins. If your connectors are different, with one accepting 4 pins and the other 2 pins, you would need # HM11143395. The HM43385 fits 2003-2007 Tundra models, according to Hopkins. It is important that you check the existing connectors to ensure you get the correct...
    view full answer...

  • Which Replacement 4-Way and 7-Way Trailer Wiring Harness for a 2007 Toyota Tundra
  • The part you have selected, the Hopkins Tow Package Wiring Kit for Toyota Tundra, part # HM11143395, is specified for 2008 - 2010 Toyota Tundra trucks. This part has two grey connectors to couple with the factory wiring; one is a 2-wire rectangular connector and the other a 5-wire square connector. It will be a good idea to inspect the existing connectors on your Tundra to confirm the number of wires going to each so that you are certain of the replacement. Toyota did make some running...
    view full answer...

  • 5th Wheel and Gooseneck Wiring Harness for a 2012 Toyota Tundra Crew Max
  • We do have a fifth wheel/gooseneck 7-pole wiring harness for your 2012 Toyota Tundra Crew Max, but the Bargman Wiring Harness, # 54701-004, will not fit on your truck. This wiring harness was designed to fit the 2007 to 2009 model years. Instead, you will want the Bargman Fifth Wheel/Gooseneck Wiring Harness, # 54701-003. This wiring harness is designed to work with trucks that have a factory 7-way trailer connector at the bumper. It will plug inline at the back of the factory 7-way...
    view full answer...

  • 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket for a 2007 Toyota Tundra
  • In order to replace the 7-Way connector and the wiring harness on a 2007 Toyota Tundra, you will need two parts. First, you can use Pollak 7- and 4-Pole Trailer Connector Socket, # HM40975. Second, you will need Pigtail Wiring Harness, # PK11998 if the wiring is damaged on the old part. You will need to hardwire the harness to the wiring on the vehicle. This will require a circuit tester, like # 3808, if you need one. The wiring color and function combinations for the harness can be found...
    view full answer...

  • Will Pollak Trailer Connector Socket # HM40975 Fit Factory Tow Package Wiring on 2007 Toyota Tundra
  • The Pollak 7 and 4-Pole Trailer Connector Socket, part # HM40975, is compatible with the OEM wiring harness on your 2007 Toyota Tundra. This socket will plug into the OEM female end socket on the vehicle. If the female socket on your vehicle is damaged or missing I would recommend the Pollak 7 and 4-Pole Trailer Connector Socket with Wiring, part # HM40975-11998. This part is the same connector (# HM40975) with the female socket with pigtail wiring. I am including a link to a video...
    view full answer...

  • Is Factory 7-Way Wiring the Same on Dodge, Ford, GM, and Toyota Trucks when Adding In-Bed 7-Way
  • After a certain year, Dodge, Ford, GM, and Toyota all started using the same type of connectors for tow package wiring 7-Way connectors. There are a few harnesses that fit all 4 of these makes. If you are using a harness like # 51-97-410 with the round connectors that just plugs in then it would be the same on newer Dodge, Ford, GM, and Toyota vehicles. On older models and those that did not originally come with a 7-Way trailer connector from the factory they would be unique to the manufacturer...
    view full answer...

  • Installation of the T-One Trailer Wiring Harness for a 2012 Honda CR-V
  • Wiring harness # 118561 is a T-connector. This means that it plugs in line with the wiring on the vehicle. Where it plugs in there is a connector already plugged into another connector and for sake of argument, it comes in a straight line from the front to the back of the vehicle. To install this wiring harness, you unplug the vehicle connectors. One will go into the larger connector on the harness, the other to the small connector on the harness. So know you have a T. The original...
    view full answer...

  • 5th Wheel/Gooseneck 90-Degree Wiring Harness for a 2010 Toyota Tundra with Factory 7-Way
  • For a 2010 Toyota Tundra that has a factory installed 7-Way trailer connector, you can use 5th wheel/gooseneck wiring harness # 51-97-410. This harness will plug in line with the factory wiring harness beneath the truck. Both the new harness and the existing harness at the back of the truck will be functional (but you will not want to use them at the same time because it can overload the system). I have included a link to a video showing a typical installation for you. The video features...
    view full answer...

  • Fifth Wheel and Gooseneck Trailer In-Bed Wiring for a 2011 Toyota Tundra
  • I did some checking and you actually need wiring harness # 51-97-410, for a 2011 Toyota Tundra. This is also a 90 degree harness. I have included a link to a video that shows a typical installation for you to view.
    view full answer...

  • Replacement 7-Way Trailer Connector for a 2007 Toyota Tundra
  • From what I could find, the 2007 Toyota Tundra used a harness like the 2006 model, # 20137. However, the plugs in this replacement connector do not sound like what you are describing. What you are describing sounds like the harness for the 2008 to 2010 models, # HM11143395 that you have referenced. Also, for a 2007, I found that a harness like # 54701-004 will fit and it has connectors like on # HM11143395. You will need to examine your connectors closely to determine which one, # 20137...
    view full answer...

  • Installing a Brake Controller on 2005 Toyota Tundra
  • The factory installed brake controller connector should be a white plug located on the left side under the drivers side dash on your 2005 Toyota Tundra Dual Cab. I have included a photo and a video that shows the location of the plug on another Toyota Tundra at the 8 second mark. This plug may not be there if your vehicle did not come with the factory tow package. The Multi-Plug, # 20137, is designed as a replacement if your vehicle came with a factory tow package that included the...
    view full answer...

  • Installing Hopkins Tow Package Wiring Kit # HM11143395 on 2008 Toyota Tundra
  • The Hopkins Tow Package Wiring you referenced, part # HM11143395 will plug into the trailer wiring connectors located under and behind the rear bumper. The connectors are usually found over toward the drivers side frame member. If the controller is already installed using a wiring adapter like # 3040-P, you should be all set to go. Make sure that the extra ground wire on the adapter is securely attached to a factory grounding point under the dash. You can see an install video showing...
    view full answer...

  • Parts Needed to Install a Brake Controller on a 2008 Toyota Tundra With a Factory 4-Flat
  • The Hopkins Tow Package Wiring Kit, part # HM11143395, you selected is intended to be a factory replacement if your vehicle came equipped from the factory with a 7-Way connector. To finish the installation of your brake controller on your 2008 Toyota Tundra with a factory 4-flat, you can use our Brake Controller Installation Kit, # ETBC7, or purchase individual parts as needed. Hopefully the 7 way connector installed by the previous owner has a connection point for the factory 4-Flat...
    view full answer...

  • Comparing the Trailer Wiring Harnesses for a 2000 Toyota Tundra
  • Tow Ready/Reese has determined that the best way to add a harness, # 118367, to a 2000 Toyota Tundra would be to have an additional connector that is circuit protected and grounded up near the battery. This is more like how a factory harness would be. The Hopkins harness, # 43365, omits that part. The harness still works it is just not as protected as the Tow Ready harness. If I has to choose between the 2, I would spend a little more and get the added protection of the Tow Ready...
    view full answer...

  • 4-Way to 7-Way Trailer Connector Adapter for a 2012 Toyota Tundra
  • If trailer brakes are not required and you do not plan on getting a brake controller any time soon, you can just use # 37185. Plug the 4-Way into this adapter, ground the white wire and you will be able to plug in the 7-Way and you will have ONLY lighting functions. If the trailer requires a 12 volt circuit, trailer brakes, auxiliary power, or reverse lights they will not function. If you decide that you do want all of those features in the future. You would need the follow items to...
    view full answer...

  • Parts Needed to Add a 7-Way Trailer Connector to a 2005 Toyota Tundra
  • The Multi-Plug, # 20137, is designed as a replacement if your 2005 Toyota Tundra came with a factory tow package that included the harness from the factory. To add a 7-Way to a truck that did not have the factory tow package, you would first need to install a 4-Way, # 119176KIT. I have included a link to the isntallation details for you to view. This converter will take the separate turn and brake signals on the truck and make them a combined signal for use with the trailer. After...
    view full answer...

  • Trailer Light Not Working and Wiring Harness Show No Power on 2002 Toyota Tundra
  • First, what I recommend is checking the converter box in the trailer wiring, # 118378, to determine if it is the harness or the truck that is the problem. Use a circuit tester like # 3808 if needed to test the wires going into the converter box from the truck. If the signals are correct going into the box, you know that the truck is not the problem. Then test the wires coming out of the converter. If the signals are all correct coming out of the converter, the problem is somewhere on...
    view full answer...

  • Trailer Wiring Harness for a 2002 Toyota Tundra
  • I went out to the warehouse and pulled the trailer wiring harness, # 118378 to take a look at the plugs. There are actually 2 plugs, one that connects to a power receptacle on the truck for power and another one that plugs into the back where your receptacle is located. The harness does have 3 rows of plugs but the center row does have one pin right in the middle of the plug. This harness is the correct one listed for a 2002 Toyota Tundra. Take a look at the instructions for the harness...
    view full answer...

  • Availability of a Replacement Trailer Wiring Connector for a 2003 Toyota Tundra with Tow Package
  • The Tow Ready Wiring Harness, # 20137, will connect to the factory connectors on the 2003 Toyota Tundra, but the receptacle does not fit in the factory location. This is the only replacement harness that we offer for the 2003 Toyota Tundra. I have included a link to the installation details for you.
    view full answer...

  • Adding a 4 and 7-Way Trailer Connector to a 2007 Toyota Tundra
  • In order to install a 7-Way trailer connector on a 2007 Toyota Tundra, it would be a hardwire situation, as the HM11143395 will not fit. Instead you would need to have a 4-Way or add a 4-Way using # 119176KIT, and then use a 4 and 7-Way installation kit # ETBC7. I have included a link to the installation details for the 4-Way and links to an FAQ and video showign the installation of an ETBC7 kit. If you need a brake controller, I recommend the Tekonsha P2, # 90885. It is one of our best...
    view full answer...

  • What Parts are Need to Add a 7-Way Trailer Connector to a 2001 Toyota Tundra
  • I do have a solution for you. In order to add a 7-Way wiring harness to your 2001 Toyota Tundra, you will need to start by adding a 4-Way, # 118378, if you need one. I have included a link to the installation instructions for this harness for you to view. With a 4-Way installed (or using an existing 4-Way if applicable) you will then need to install a 4 and 7 Way Installation Kit, # ETBC7. This kit includes everything you will need to install a functioning 7-Way on your truck. I have...
    view full answer...

  • How Does the Hopkins Tow Package Wiring Kit # HM11143395 Install On a 2010 Toyota Tundra
  • As long as your 2010 Toyota Tundra has the factory tow package 7-way connection harness underneath the rear of your truck this would simply plug in and you would be ready to go. However, if you do not have the factory harness you will still be able to plug this unit in. I would recommend plugging the Hopkins Tow Package Wiring Kit, part # HM11143395, and testing the wires to make sure the tow package is complete. If you have a 4-way trailer connector and you are looking upgrade to a...
    view full answer...

  • Can I Use Hopkins Tow Package Wiring # HM11143395 To Replace Factory 7-Way on 2008 Toyota Tundra
  • Yes, the item you selected, Hopkins Tow Package Wiring Kit, part # HM11143395 is the factory replacement wiring for the 2008 Toyota Tundra with factory 7-way, and is the correct wiring that you will need. If you are wanting to install the Tekonsha P3 Brake Controller, you will also need to use the vehicle specific adapter that plugs into the back of your brake controller and into your vehicles brake controller plug located under the dash. You will need the P3 Brake Controller With Wiring,...
    view full answer...

  • Availability of a 7-Way 5th Wheel Trailer Connector for a 2005 Toyota Tundra
  • For the 2005 Toyota Tundra with factory installed 7-Way trailer connector, a custom fit 5th wheel/gooseneck truck bed wiring harness that plugs in line with the factory wiring is not available. but there are options. If your existing connector does not have the round connector plugged into the back, you will need to splice in a harness like the 7-Way Pre-Wired Connector, item # 20023, see video link. Another option would be to use an extension like the 7-Way Connector 7 foot Loop, item...
    view full answer...

  • 7-Way Trailer Wiring and Brake Controller Recommendations for a 2002 Toyota Tundra
  • To install a 7-Way blade style trailer connector on your 2002 Toyota Tundra, there are a couple of parts you will need. First, you will start with installing a 4-Way wiring harness, # 118378. The tail light signals on your Tundra work on a 3-wire system. The converter takes those signals and converts them down to a 2-Wire system used by the trailer. I have included a link to the installation details for reference. Next, you will need to install a 4 and 7 Way Installation Kit, # ETBC7....
    view full answer...

  • How Long Would it Take to Install a Tow Ready Wiring # 118378 on a 2002 Toyota Tundra SR5
  • This T-One Vehicle Wiring Harness with 4 Pole Trailer Connector, part # 118378, installs very easily. After looking at the instructions it looks like it should only take about twenty minutes or so to install this product on your 2002 Toyota Tundra SR5 Access Cab with a Lift Gate. Aside from needing access to basic tools, this product comes with everything you would need to install the # 118378. I attached installation instructions below for you to check out also. These should give...
    view full answer...

  • 5th Wheel and Gooseneck Trailer Hitch Wiring Recommendation for a 2009 Toyota Tundra
  • Provided that your 2009 Toyota Tundra has a factory 7-Way trailer wiring harness at the rear of the truck, you can use 5th Wheel and Gooseneck 90-Degree Wiring Harness with 7-Pole Connector, # 51-97-412. This harness is designed specifically to be mounted in the bed of the truck for 5th wheel or gooseneck trailers and connect in line with the factory wiring on your truck.
    view full answer...

  • Parts Need To Hook Up a Brake Controller To 2009 Toyota Tundra w/ Factory 4-Way
  • The item you selected, Hopkins Tow Package Wiring Kit, part # HM11143395, is intended to be a factory replacement if you vehicle came equipped from the factory with a 7-way connector. To install a brake controller on your 2009 Toyota Tundra, you are correct, you would need to install the Brake Controller 7 & 4 Way Installation Kit, part # ETBC7. To install part # ETBC7, you will begin by plugging in your 4-way connector to the ETBC7. The White wire is the ground and should be connected...
    view full answer...

  • Replacement 7-Way Trailer Connector and Wiring Harness for a 2007 Toyota Tundra
  • We do have the Pollak 7- and 4-Pole Trailer Connector Socket, # HM40975, if it is just the plug part that is broken on your 2007 Toyota Tundra. If the wiring harness is damaged, you could use the 4 Foot Pigtail Wiring Harness, # PK11998, to replace the area that is broken. The wiring configuration for this harness can be found on the product page in the Specs section.
    view full answer...

  • How To Install Trailer Wiring To Get A 7 and 4-Way Connector on 2006 Toyota Tundra SR5 w/Tow Package
  • I contacted our representative at Hopkins and he informed me that there should be another plug next to or near the square plug on your 2006 Toyota Tundra SR5 w/ tow package. There are a few scenarios as to why the plug is not there, but I did come up with a solution for you to have a 4 and 7-way connector at the rear of your vehicle. The first possibility is that perhaps you overlooked the plug or it is tucked away just out of sight. There is also the possibility that your vehicle is...
    view full answer...

  • What 7-Way And 4-Way Connector Will Replace Existing 7-Way On 2008 Toyota Tundra With Tow Package
  • For your 2008 Toyota Tundra with factory tow package you will need to use the Hopkins Replacement Multi-Tow 7-Way and 4-Way Trailer Connector # HM11143395. This will plug into your factory tow package wiring harness and give you a 7-way and 4-way at the rear of your vehicle. It looks just like the # 20137 picture, but has a different connector for the 2008 to 2010 Toyota Tundra. The Tow Ready Replacement Multi-Plug 7-Way and 4 Pole Trailer Connector, part # 20137, is for the 2003 to...
    view full answer...

  • Will Tow Ready T-One Wiring Harness # 118378 Plug Into The Factory Plug On A 2002 Toyota Tundra
  • The T-connector plug on the Tow Ready T-One Vehicle Wiring Harness # 118378 will plug into the 11-pin factory plug located under the 2002 Toyota Tundra in the rear, close to the driver side frame rail. There is another connection that has to be made under the hood of your vehicle. You will need to move the battery and find a gray connector located between the battery and the fender. You will remove the plug in the gray connector and plug-in the trailer harness fuse holder connector...
    view full answer...

  • Items Needed to Replace and Relocate a Broken OEM 7-Pin Plug on a 2007 Toyota Tundra
  • There are several options for installing a 7-way or 7-Way and 4-Way at the rear of your 2007 Toyota Tundra. I will list the options below, so you can determine which will be the best option for relocating your connector to the bumper of your vehicle. The Pollak 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End, item # HM40975, is the connector we normally recommend as a direct replacement for your truck. We have a video review of this connector for you to check...
    view full answer...

  • Can T-One Vehicle Wiring Harness # 118449 be Routed Under a 2008 Toyota highlander
  • We do not carry the grommet in question for your 2008 Toyota Highlander, but you may still be able to route the wiring under the vehicle and to the hitch using an existing grommet near the connection point for the wiring harness at the rear of the Highlander. If there is a near by grommet that allows access to the outside of the vehicle, what you can do is to cut a small slit in it, pass the 4-Way through, and pull it over to the hitch. You will want to then seal up the slit using silicone...
    view full answer...

  • Trailer Lights Go Out When I Apply Brakes on Tow Vehicle 2002 Toyota Tundra
  • It sounds like there is a bad ground connection somewhere on the trailer because your lights are working when they are not put under a load. Whenever your tail lights are on and then you apply the brakes, the system is under max amp load, and with a bad ground the lights cannot support all the amps. I would start by checking the ground connections of the tail lights on the trailer to make sure there is a good connection to a clean metal surface. You will also want to inspect the wires to...
    view full answer...

  • Fuse Location for 118378 Tow Ready T-One Vehicle Wiring Harness
  • The 10 amp fuse for the # 118378 wiring harness is installed in the small yellow fuse holder, located on the smaller portion of the wiring harness that does not have the black converter box. This part of the harness would be connected underneath the hood of your 2002 Toyota Tundra. You would disconnect your negative battery cable, remove the battery hold down bracket, and slide the battery forward to locate the mating connector on your vehicle between the battery and fender. Remove...
    view full answer...

  • Recommended Replacement 4-Way and 7-Way Wiring for a 2003 Toyota Tundra Without a Tow Package
  • The # 20137 would not be a fit for your 2003 Toyota Tundra, as it will only work on models with the factory tow package. In order to first replace the 4-Way plug, you will need to use a hardwire kit, like part # 119176KIT. The # 119176KIT wiring kit is a universal application, so vehicle specific instructions are not available for your Tundra. You will need to use the included circuit tester to determine which wires behind your vehicle taillights are performing which function, and...
    view full answer...

  • Parts Needed for Brake Controller Installation on a 2005 Toyota Tundra
  • For the 2005 Toyota Tundra with no factory trailer wiring you will need the Modulite Wiring Harness, item # 119179KIT, along with a Brake Controller 7 & 4 Way Installation Kit, item # ETBC7, and a brake controller of your choice. I would recommend the Prodigy P2 Brake Controller, item # 90885. With these items you will be able to perform a professional looking installation that will provide you with a brake controller and 7 and 4-Way trailer connector at the rear of your 2005 Toyota...
    view full answer...

  • What Parts are Needed to Convert a Toyota Tundra with a 4-Way Connector to a 5-Way Connector
  • If the 4-Way flat came on the truck from the Toyota factory, there would be no need to buy an Upgraded HD Modulite harness like part # 119190. The truck would have all the necessary electrical components in place. You would just need a 4-Way to 5-Way adapter like part # 20036. The blue wire is then connected to the reverse light wire on the truck if the trailer uses the blue wire for reverse lights. Occasionally the blue wire can be used for trailer brakes on a trailer. You could then...
    view full answer...

  • Is Tow Ready 90 Degree Fifth Wheel Wiring Harness # 54700-004 for Toyota Tundra a Plug and Play
  • The Tow Ready 90 Degree Fifth Wheel Wiring Harness, part # 54700-004, is designed to fit the 2007 to 2009 Toyota Tundra with the factory tow package and 7-Way trailer connector. If you have the Tundra with a factory tow package, the wiring harness will just plug inline with the factory connectors under the vehicle. No cutting or splicing is needed.
    view full answer...

  • Fifth Wheel Wiring for a 2008 Toyota Tundra
  • To install the 7-way connector into the bed of your 2008 Toyota Tundra, we offer the Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness, part # 54701-004. This harness will plug into the existing wiring, with no cutting or splicing required.
    view full answer...




Stay Connected


Subscribe to email newsletter

Email  

privacy - we don't send unsolicited email






etrailer.com reviewsetrailer.com reviews

All images, layout and content copyright etrailer.com