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Expert Answers about Wiring


  • Trailer Hitch Receiver and Wiring Harness For a 2021 Kia Sorento
  • The Upgraded ModuLite Circuit Protected Vehicle Wiring Harness # 119179 is a universal style harness that will work on your 2021 Kia Sorento. I recommend using the Tekonsha T-One Vehicle Wiring Harness # TK26FR as it is a custom fit harness for your Sorento. It uses OEM connectors for the taillight wiring rather than splicing. It also includes the wiring, connectors and fuse for running the 12 volt power wire. The Draw-Tite Max-Frame Trailer Hitch Receiver # DT25MR is the receiver...
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  • Recommended Trailer Wiring Harness for 2011 BMW X3 28I
  • For your 2011 BMW X3, the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit # 119250KIT is a great choice if you don't want to splice into your vehicle wires, but it is more expensive due to the zero contact interface sensors. If it were me, I'd use the Upgraded Heavy Duty ModuLite Circuit Protected Vehicle Wiring Harness with Installation Kit # 119190KIT confirmed to fit your vehicle and use the quick splice connectors on the factory wires....
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  • 7-Way Upgrade Kit to Install Curt Echo Brake Controller and Provide 12V Power for Trailer Battery
  • If you have a 4-pole wiring setup now and you want to install a wireless trailer brake controller you will use an adapter like Curt # C57672 or Hopkins # 37185. Both install by plugging in to your 4-pole and by making additional wiring connections using the pigtail leads. If you want to use a wireless smartphone-controlled brake controller like the Curt Echo # C51180 you will not need to run a blue brake output wire. All you'll need to do is provide a 12V power connection to the adapter....
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  • 7-Way Trailer Plug Adapter or Compatibility with Lance Slide-In Truck Bed Camper
  • Lance does have a proprietary plug, but many customers see a standard 6-way or 7-way round and notice it doesn't fit their factory 7-way as well. I've attached an article to help if you have one of the 7-way or 6-way round connectors which we do have adapters for. If you have a 7-way round, then you will use adapter # 47595. If you have a 6-way plug then you will use adapter # A10-7276VP or # PK12728. If you have the special Lance plug, I recommend replacing it with # 54-77-003 which...
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  • Redarc Tow-Pro Elite vs. Curt Spectrum Brake Controller for 2019 Audi Q5
  • On the surface, there is a lot of similarities between the Curt Spectrum Trailer Brake Controller # C51170 and the Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR, but the Redarc is truly the superior option in every way for your 2019 Audi Q5. Since you don't have trailer wiring in your Audi you will need to add Vehicle Wiring Harness # 119190KIT and Universal Installation Kit for Trailer Brake Controller # ETBC7, though the Spectrum also needs the Wiring Adapter for Curt Trailer...
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  • Is My 2016 Honda Pilot Trailer Wiring 7-way or Only 4-way?
  • Your 2016 Honda Pilot will have a trailer wiring plug behind the driver's side at the rear by your tail lights. I've attached a video of the Curt # C56291 harness to assist. The Curt wiring harness # CU86FR is the 7-way wiring harness that connects to the same location. Each kit activates the tow package already available in your vehicle, so I recommend installing the 7-way unless you know you will only ever use the 4-way. It is a little more work on the installation side but gives you...
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  • Plug and Play 7-Way Trailer Connector for 2018 Ford F-150
  • To install a 7-way on a 2018 Ford F-150, you'd use the Curt # C56413 which installs as shown in the linked video.
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  • Recommended Wiring Harness and Hitch For 2019 Chevy Bolt
  • For a wiring harness on the 2019 Chevy Bolt I recommend the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit part # 119250KIT which is a clamp on style wiring harness. There is not a custom plug and play option available for the Chevy Bolt but the wiring harness clamps to the vehicle wiring instead of splicing in so this is your best option. If you need a hitch, I recommend Draw-Tite Sportframe Trailer Hitch Receiver part # 24956 which...
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  • How Does 7-Way and Brake Controller Install in 1973 Ford F-350
  • For a truck as old as yours it would be pretty hard to find a wiring diagram for installing the 7-way part # 20023 but I can help you figure it out using a circuit tester like the part # PTW2993. Basically you are going to need to test all of the wires of your taillights to determine their function and then wire to the 7-way using the included diagram. Now hardwiring in a brake controller will be a similar process but you'll only have to test the wires at the brake switch till you find...
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  • Installing Hopkins 4-Way/7-Way Wiring on a 2016 Chevy Colorado
  • Yes, the Hopkins 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring # HM40975-11998 is in stock. Installing this on a 2016 Chevy Colorado should take no time at all (maybe 20 minutes tops if you aren't familiar with it?) because all you have to do is replace the knockout plug in the bumper with this connector and then splice in the wiring harness to the OEM wiring on the driver's side of the bumper. Since this wiring will be out in the elements I recommend using...
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  • What is the Difference Between Curt Wiring Harnesses # C56175 and # C59236?
  • Both the Curt # C56175 and # C59236 will add a 4-way trailer connector to your 2006 Volkswagen Golf. The main difference between these products is that the # C59236 is a powered tail light converter, which means it gets wired to your vehicle's battery instead of only receiving power from your vehicle's tail light circuit. Basically, what this does is limit the power drawn from the tail light wiring to isolate your vehicle wiring from your trailer wiring. In case there is an overdraw situation,...
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  • Recommended Fifth Wheel Wiring Connection for 2019 Ford F-350 Super Duty
  • You are correct, there are two Bargman 5th wheel wiring harnesses for a 2019 Ford F-350, and the correct harness will depend on if you have the Fifth Wheel Towing Package in your truck. The fifth wheel towing package means your truck has the puck system for mounting a fifth wheel hitch like the B&W Companion 5th-Wheel Hitch for Ford Super Duty Prep Package # BWRVK3300. The Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness # 54701-007-010 is the recommended harness if your 2019 Ford...
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  • Fifth Wheel Wiring Harness Recommendation for 2020 Ford F-350 Super Duty With Prep Package
  • The recommended fifth wheel/gooseneck wiring harness for your 2020 Ford F-350 Super Duty with the factory prep package is the Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness for Aluminum Truck Bed # 54701-007-010. The reason for that is when I have contacted Bargman about this issue in the past, they told me that while the other harness, part # 50-97-410-010, will work with a Ford F-350 with the fifth wheel prep package, there have been very, very rare occasions where it can read...
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  • 5th Wheel 7-Way Kit Recommendation for 2020 Ford Super Duty Cab and Chassis
  • We have 5th wheel trailer wiring kits that fit your 2020 Ford F-350 Cab and Chassis like with the part # C57008 but the part number you referenced does not fit your truck. The # C57008 does not install to the connectors you sent in a picture of though. These plug inline with the 7-way connectors at the rear of your truck.
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  • How To Hook Up Utility Trailer Lights To Trailer Connector
  • Yes, it is possible to power a flood light via the battery charge line on the trailer connector. The battery charge line is already fused so all you would need to do is run a power wire part # 10-1-1 from the back of the trailer connector to the light. That said, you would probably want to be able to turn the light on and off at your leisure so you would also want to install a switch part # PK34212 on the power wire from the trailer connector to the light. The light would then need to be...
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  • Wiring Lance Slide In Camper to Work with In-Bed Trailer Connector on 2019 ford F250
  • Since the 7-way round pin plug is obsolete, your best bet would be to replace the connector on your camper with the common 7-way blade style connector. You'd remove the existing plug on your slide in camper, and replace it with # 54-77-003. You could then use an extension like # C56080 to reach the connector rearward of the wheel well.
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  • Why Do Some 7-way Plugs Use Dual Contact Surfaces
  • A 7-way (female) vehicle socket like # PK12-707E has a single blade contact; these fit in between the dual contact surfaces in a (male) trailer plug like # 54006-059, # 277-000143 or # A10-7W10 and the connector (type BB) shown in your photo. Some 7-way male plugs will use a single blade contact, such as the plug on Hopkins 7-way extension # HM20049. This item's female socket and male plug happen to both use the single contact. Both types are compatible with each other. The Bargman...
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  • Does the Brake Output Wire Get Attached to a 12 Volt Trailer Battery
  • In order to rewire your trailer, I strongly recommend you use the Trailer Wiring 7-Way Upgrade Kit part # e99011 with the Bonded 4 Wire part # 16-4B-1. This is going to ensure you have all the correct wire gauge and the junction box makes for a clean install as well as an easy way to troubleshoot if you ever have issues. In regards to the brake output wire part # 10-1-1, this will receive power from the tow vehicle's brake controller via the 7-way, not a battery during normal braking. However,...
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  • Parts Needed to Connect Gooseneck Trailer to Semi-Truck 7 Pole Round Plug
  • You can use the Pollack # PK11700 to install on your gooseneck trailer and create a 7 way plug capable of fitting on the 7 pole round plug that is on a semi tractor trailer truck. For the wiring you can use the Deka Jacketed 7 Wire # DW04914-1 which is a jacketed 7 wire sold by the foot that will allow you to connect to your trailer's wiring and the plug. If you just want to go the adapter route, you can use the Pollack # PK12-724.
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  • No-Drill 5th Wheel Brackets That Fit 2021 Chevy Silverado 2500
  • We do have no-drill 5th wheel brackets which are a fit for your 2021 Chevy Silverado 2500. The correct fit for your truck is the following: - Curt Custom 5th Wheel Bracket Kit for Chevy/GMC Truck # C16429 This bracket kit will install onto your Chevy without any drilling, though they do require you use the Curt above-bed base rails (all 5th wheel brackets need to use the same manufacturer's base rails in order to fit). For that you can choose from two different finishes, either the...
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  • How To Install a Brake Controller on 2017 Mercedes-Benz Sprinter 3500
  • You can hard-wire in a brake controller and it seems that there are not a lot of the Sprinter 3500 models that are pre-wired, at least from what I've seen in my research. I have not seen any reports that this isn't possible, and we even have an installation video to walk you through the process. The way to find out whether or not the plug is present by using a circuit tester like the # 40476 and testing for a hot wire when the brake is pressed- it's possible that one of the plugs that...
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  • Recommended Trailer Wiring Harness for a 2016 Cadillac SRX Without Tow Package
  • Correct, the trailer wiring harness that you need to power trailer lights is not included with any of our trailer hitches. In order to add this I recommend using the Upgraded Circuit Protected ModuLite part # 119179KIT because it comes with everything that you need for installation (wire connectors, circuit tester, etc.). For a trailer hitch, I recommend using the Draw-Tite Max-Frame Trailer Hitch Receiver part # 75682 because it is a bolt-on option that provides a clean look once installed...
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  • Does Installation of Trailer Wiring Harness on 2020 Toyota Highlander Void Vehicle Warranty
  • Good question, and the installation of any aftermarket parts such as a trailer wiring harness will not void the warranty on your 2020 Toyota Highlander Hybrid, or any other vehicle. The reason for that is because you are protected by what is called the Federal Magnusson-Moss Warranty Act. This act says if something breaks on your vehicle and you take it in for warranty repair, the dealer must honor your warranty unless whatever you have added to your vehicle or its installation actually...
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  • How To Use A 5 Pin Boat Trailer Adapter On A 2021 Genesis GV80
  • The 2021 Genesis GV80 may already have a 4 pin trailer adapter installed from the dealer and you can convert it to a 5-pin. If it does not have a 4 pin already, then you will need to install the Curt Tail Light Converter 4-Pole Flat Trailer Connector # C59236. This will splice into the taillight wiring on your vehicle, and there will be a few more wires to run (power and ground wires). I have attached a demonstration video for this kit. Once you have a 4-pin installed, you will...
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  • Re-Wiring Trailer for Tail Lights and Electric Brakes
  • To completely rewire your trailer I recommend using the Trailer Wiring Kit # e99011. This includes a 7-Way connector, a junction box to provide you with a clean setup, and all the necessary hardware. You will then just need additional 16 gauge wiring # 16-4B-1 for the light circuits and 10 gauge wiring # 10-1-1 for the brake and 12V power wires, both of which are sold by the foot. I have attached a great install video along with a standard trailer wiring diagram that you can use for...
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  • Recommended Trailer Wiring Harness for 2013 VW Jetta SportWagen
  • The EcoHitch # 306-X7284 is a great choice! In order to add wiring to tow your boat (those are really cool, by the way), you'll want to use the Tekonsha # 119179KIT which comes with a circuit protected Modu-Lite converter to help protect the electrical components on your vehicle. I recommend using the Tekonsha over the Curt # C59496 harnesses because the converter is a little bit more reliable and since you're likely going to have LED lights on your trailer, the slight difference in amp...
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  • How To Install 4-way Trailer Connector In 2021 Toyota Highlander XLE Without Factory Tow Package
  • To install the Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector # C59236 you were looking at for your 2021 Toyota Highlander XLE I recommend removing the trim on the inside of the hatch and mounting the converter on the driver side of your Highlander, and using a circuit tester like # PTW2993 to identify the correct wires to splice in to. Another option is the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # TK99FR which is confirmed to fit your Highlander...
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  • Can Curt Echo Brake Controller be Installed in 4-Way/7-Way Adapter and Still Work
  • That's actually a really good question! All the Curt Echo # C51180 needs to operate properly are the basic trailer lighting functions (found on a typical 4-Way), and then 12V power. If you already have a 4-Way/7-Way adapter like part # C57672 then all you'll need to do is run a length of 10 Gauge Wire # 10-1-1 to a 30A Circuit Breaker # PK54530 and then to the positive battery post on your tow vehicle. If you don't already have an adapter then you can just get the Upgrade Kit # ETBC7L...
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  • Replacing 6-Pin Trailer Connector For 7-Way Blade Connector
  • If you are not wanting to use a Adapter 7-Pole to 6-Pole # 47549 and would rather wire in a new Hopkins 7-Way RV Style Connector # HM20087 the wiring may be confusing. There may be some trial and error involved as the wiring could have been connected differently on your trailer. I have included a picture below of the plug wiring if you have not already removed the 6-pin connection so that you will be able to label the wires based off their location in the connector. I recommend tracing...
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  • How To Convert a 4-Way On a 2017 Jeep Renegade To 7-Way for Trailer with Brakes
  • In order to convert a 4-way on a 2017 Jeep Renegade so you can tow a trailer with a 7-way way that has electric brakes you will only need a few things, a 4 to 7-way adapter and a brake controller. I have two great options for the adapter and brake controller but I highly recommend going the wireless route. The wireless route only requires very minimal installation and far less modifications to the vehicle which is why I recommend this option though it will set you back a bit more than the...
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  • 5th Wheel Hitch With Highest Capacity For 2010 Ram 3500
  • There is a heavy-duty 5th wheel hitch that you can use with your 2010 Ram 3500, though there isn't one that has a 37,000 lb weight capacity. Instead, the highest capacity 5th wheel hitch available has a 30,000 lb capacity, and is from Curt: - Curt A30 5th Wheel Trailer Hitch # C66HR The A30 uses an interlocking dual jaw system that wraps totally around the king pin, and this vice-like connections means that the back-and-forth chucking, bucking and jarring that you get when towing...
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  • How To Power Trailer Lights From a 2015 Mercedes-Benz GL-550 Without Tow Package
  • In order to power the trailer lights on a 2015 Mercedes-Benz GL-550 without tow package you will first need to start with a basic four way trailer wiring harness. The ZCI Circuit Protected Vehicle Wiring Harness part # 119250KIT is what I recommend since it is the only option for this vehicle that does not require splicing. However, if you are okay with splicing and looking to save some money then the Curt Powered Tail Light Converter part # C59236 will still work. The above will then...
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  • Using a Circuit Tester from Wiring Harness Kit to Determine Wire Connections on 2019 Hyundai Tucson
  • The Upgraded Modulite Vehicle Wiring Harness Kit w/ 4-Pole Trailer Connector and Installation Kit # 119147KIT comes with a basic circuit tester that has an alligator clip on one end that connects to a ground like the metal frame on your vehicle. Then you will use the sharp point to insert into the wire connection while you run one lighting function at a time. The LED bulb will light to reflect the function it sees on that wire. You can see this in the attached video at the 2:00 mark. The...
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  • How To Plug 1997 Lance Truck Camper Into 7-way Connector On 2016 Ford F-250
  • We have run into this quite a few times in the past, and the best option will be replacing the Lance 7-pin connector with a standard 7-way blade connector like the # PK12706. This will give you a standard 7-way connector to plug into the factory 7-way on your 2016 Ford F-250. There is not a adapter compatible with the connector on your 1997 Lance Camper as they use their own style connector that does not match any standard connectors. I included a video of the # PK12706 for you to...
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  • Brake Controller Recommendation For A 2019 Mercedes GLS
  • Yes you will need a brake controller to tow your RV as you did with your Toyota 4Runner to provide safe braking. If you have your previous brake controller from your 4Runner, you could install it in your GLS 450 with a new wiring harness. I would be happy to recommend one if you can let me know what model controller you have. If you need a new brake controller and your Mercedes GLS 450 already has the 7-Way connector, the Curt Echo Mobile Trailer Brake Controller # C51180 is my...
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  • Installing 5th Wheel Wiring Harness in 2018 Ram 2500 Short Bed with Factory Drop-In Bed Liner
  • For your 2018 Ram 2500 short bed, I recommend the Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness - 7' Long # 54701-003 or Curt # C56070. This will allow you to install the plug anywhere you desire. Many people will install it near the tailgate on the driver's side. The drop-in bed liner doesn't add any issue to the install other than another layer to drill your hole through and using longer screws to mount.
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  • My Vehicle has a 4-Pin Trailer Plug, but Trailer has 7-Pin Trailer Plug
  • If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part # C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give you trailer light functions. If your trailer has a 7-pin connector, then it likely has electric trailer brakes and an onboard battery. If you want a fully functioning 7-way trailer socket on his vehicle, then the installation will be a bit more...
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  • Will the Bargman 5th Wheel/Gooseneck Wiring Harness 54701-009 Work On a 2019 Ford F-250
  • The correct Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness for a 2019 Ford F-250 is the part # 50-97-410-010. However, the Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness part # 54701-009 will also work you just need to obtain the Bargman Mounting Hardware part # 54700-010 to prevent galvanic corrosion. The only difference is that one comes with steel screws and the other with aluminum screws. I have attached an install video for you so you can see how it installs.
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  • Trailer Hitch Receiver Fit for 2020 Toyota Highlander
  • You can get a Class III trailer hitch receiver for your 2020 Toyota Highlander right here, with the Curt Trailer Hitch Receiver # C99FR. This is a Class IIII, 2" hitch that also fits the Hybrid models of '20 Highlander and will be exactly what you need to tow your boat trailer; I have added a link to a video install for you to check out as well. To complete your towing setup with your Highlander you will need a trailer wiring harness, either the T-One Vehicle Wiring Harness # TK74FR...
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  • Wiring Needed To Install A Curt Echo and Curt 7-Way With Backup Alarm On a 2016 Kia Sportage
  • The first step will be completing the installation of the Curt Trailer Connector Adapter with Backup Alarm # C57102 on to your 2016 Kia Sportage. You will need enough 12 Gauge Wire # 12-1-1 to run from the 7-way to where you will be tapping into the battery 12 volt source. This is sold by the foot so remember to account for all the bends along your Sportage to get it to your battery source. A Deka Ring Terminal # DW05741-1 will help you to connect to your power supply. The best way...
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  • Will the Draw-Tite Fifth Wheel Wiring Work on my 2020 F-350 Super Duty
  • Yes the Draw-Tite 5th Wheel/Gooseneck Wiring Harness 7-Pole - GM, Ford, Dodge, Nissan, Toyota w/ Factory Tow Item # 20110 will work for your 2020 Ford F-350 and provide you with a 7-way connector in the bed of your truck so your wiring isn't hanging over the tailgate. If I may, I don't recommend going with that particular one. Instead I recommend you use the Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness for Aluminum Truck Bed - 7 Way RV - 7' Long part # 54701-007-010 while...
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  • Where Does the Charge Line Circuit Run To On The Back Of a 6-Way On a Toad
  • If you are using the Blue Ox 7-Wire to 6-Wire, Coiled Electrical Cord part # BX88206 which it sounds like you are then you will need to attach the 12 volt power wire from the vehicle's battery to the terminal in the 1 o'clock position on the back of the vehicle side 6-way. In order to do this you will need the Roadmaster Battery Charge Line Kit for Towed Vehicles part # RM-156-25. If the pin for the 12 volt circuit on the vehicle side 7-way which is in the 1 o'clock position is not...
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  • Test LED on Curt C57674 4 to 7 way 12v Adapter Stays On with Vehicle Shut Off
  • There is a slight draw even when the vehicle is shut off, this is normal as the wire that feeds that circuit is connected directly to the battery. The LED draws a minuscule amount of voltage, so unless the vehicle will sit for several months on end, there's no danger of draining the battery. If the fact that the LED remains lit is a concern to you, you could install a battery isolation solenoid like # TR118665. When installed, the solenoid would disconnect that power feed when the ignition...
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  • Replacement 5-Way Trailer Wiring for Boat Trailer
  • For new 5-way wiring what you'll need is the part # A40W5B. This will handle all of the wiring that runs from the connector back to the lighting assemblies as well as for a reverse lock out solenoid. Surge brakes don't always require wiring as they don't always have reverse lock out solenoids. It's very possible yours does not have one so wiring may not be needed. If you see a solenoid at the back of the actuator on the brake line you will want to run the blue wire of the 5-way to it. I...
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  • Parts Needed to Install 7-Way on 2018 Ford F-150
  • Your 2018 Ford F-150 should at the very least have a 4-way trailer connector that you can plug into the # 37185 and have a functional 7-way. If you need to activate either the brake controller or 12 volt accessory wire circuit of the 7-way the wiring is present at a wiring harness near the rear of the truck on the frame rail as well like what you can see in the attached picture. For a hitch the etrailer # e98871 would be a really great option.
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  • Parts Needed to Add Wiring for Trailer Lights and Brakes
  • I recommend using the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector # e99011 to start off. This gives you a 7-Way connector and a clean and organized way to connect all of your wiring. Then for the wiring for your lights I recommend using the Wishbone Style Wiring Harness # A25W2GWB. This is 25' long which will give you enough for the length of your 16' trailer plus some extra wiring to make sure you have enough to connect all of your lights. You will...
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  • Trailer Brake Controller Installation on a 2015 GMC Acadia
  • The vehicle is indeed pre-wired, as you suspected. To get completely set up, you'll need a brake controller, the appropriate wiring harness to connect the controller to the vehicle and a trailer connector for the rear of the vehicle. All the rest of the wiring is ran, but you'll need some fuses and relays to activate the tow package wiring. For a brake controller, you can't go wrong with the Tekonsha P3, part # 90195. The P3 is one of the most user-friendly brake controllers available....
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  • Connecting a US Trailer to a European Truck 7-Way
  • If the tail lights are combined as well as the turn/stop functions then we have the Trailer Connector Adapter # 118710 you can use by cutting off the 4-Way and connecting those wires to a 7-Way like part # HM48480 so that you can plug in a 7-Way trailer connector. If the 7-Way European connector on the tow vehicle is wired like a true European connector (with all of those functions separated out) then you should be able to install the Hopkins Converter # HM48847 to combine the stop and...
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  • Easy to Install Brake Controller Recommendation for 2017 Toyota Highlander with 4-Way
  • I have a perfect brake controller solution for what you are wanting that is super easy to install and also performs really well. For that I highly recommend the Curt Echo Mobile part # C51180 as this basically just plugs into an active 7-way which I have an easy solution for your 2017 Toyota Highlander and once synced to your smart phone is ready to be used. It offers proportional braking which means it senses how hard you are applying the brakes of your Highlander and applies the trailer...
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  • What All is Needed to Add an EZ Connector to a 2012 Expedition and Trailer?
  • Switching over to the EZ Connector Magnetic 7-Way # 319-R7-01 will lose the 4 flat connection. However, I do have a couple solutions for you. First will be the Trailer Connector Adapter # 319-R7-54. This will adapt a standard 4 flat to work with the # 319-R7-01. If you preferred to keep a 4 flat plug, it will be a little more complicated, but not overly so. To do this, you will need to splice a 4 flat, like the Curt # C58345, either into the # 319-R7-01 at some point, or where the...
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  • Easy 4-Way to 7-Way Brake Controller Solution for 2020 Kia Sorento
  • To activate trailer brakes you do have to have a brake controller installed in your 2020 Kia Sorento. I do have a really easy solution thought that uses a similar adapter to the # C57672. So for a brake controller I recommend the Curt Echo Mobile # C51180 which basically plugs into an active 7-way and once synced to a smart phone can easily activate trailer brakes. Now the 7-way adapter kit you'd want instead is the # ETBC7L which comes with a similar 4-way to 7-way adapter and also...
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  • Vehicle Wiring Harness For a 2021 Toyota Sienna.
  • Both the Upgraded Heavy Duty ModuLite Circuit Protected Vehicle Wiring Harness # 119190KIT and ZCI Circuit Protected Vehicle Wiring Harness # 119250KIT are universal kits that will work on most all vehicles. You can use either of these on your 2021 Toyota Sienna. These kits both use powered modules to reduce the additional power pulled through the vehicle harness. There for it will not void your warranty. I recommend using the Tekonsha T-One Vehicle Wiring Harness # TK69FR as this is...
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  • Install Instructions for Trailer Wiring That Fits 2020 Kia Soul
  • You have the universal Curt trailer wiring harness that fits your 2020 Kia Soul with part # C59236 which we do have the easier to install kit part # C89KR which would have been my recommendation for you. But the type of taillights your 2020 Kia Soul has is separate so that would be the set of instructions you should follow in the install instructions that I have attached to this page.
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  • Troubleshooting Electric Lockout on Trailer with Surge Coupler
  • Your description of your trailer setup indicates that your surge coupler has an electric lockout feature to allow you to reverse the trailer without the surge brakes engaging. Some surge couplers use a manual lockout but yours has a solenoid with two wires (ground and hot) that take in the truck's reverse light signal; this closes the solenoid so no hydraulic brake fluid pressure can reach your brakes when you back up. Somewhere in your wiring you are losing your connection to the Silverado's...
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  • Recommended Trailer Wiring for 2015 BMW X5
  • For your 2015 BMW X5, I recommend the Curt Powered Tail Light Converter Kit with 4-Pole Flat Trailer Connector # C56190KIT. You can use the attached video to assist. You can route the connector down through panels or grommets to the hitch location. I recommend using a mounting bracket like # 18144. The s8sla trailer coupling preparation from what I can find means wires may be run but at not completed. I recommend using the above kit to avoid any issues and give you what you need.
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  • 7-Way Extension for Towing Food Truck with 2003 Ford Expedition
  • Thanks for the picture of the trailer wiring connector you have. Based on that you are in need of a 7-way blade extension like the part # C56080 for a 7 foot long extension or part # HM20049 for an 8 foot long extension. Or if you are looking for something shorter you'd want the part # TLW6024 which is 24 inches long.
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  • Wiring and Battery Current Requirements for Electric Boat Winches
  • An electric winch will draw a substantial amount of power from its battery, usually a lot more than the 25-amp rating for the Hopkins 12-Volt Power Inverter Adapter # HM11147650 that you referenced. For instance, Dutton-Lainson StrongArm Electric Marine Winch # DL25215 draws as much as 70-amps. Bulldog Electric Winch # BDW15020 draws as much as 340-amps at full load. This is why winches should always be wired with a dedicated battery connection using a heavy-gauge winch installation...
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  • Trailer Hitch Receiver Fit For 2021 Lexus RX 450h
  • We do have a trailer hitch receiver that is a fit for your 2021 Lexus RX 450h. I was able to confirm with Draw-Tite that they do have a hitch which fits your '21 RX 450h, which is the following: - Draw-Tite Max-Frame Trailer Hitch Receiver # 75540 I have added a link below to the installation instructions for you to check out as well if you'd like. And if you plan on doing some towing and need a wiring harness for your 2021 Lexus RX 450h, we have that as well with the ZCI Circuit...
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  • Recommended Hitch and Trailer Wiring Harness for 2020 Mercedes Metris Cargo Van
  • We don't offer a plug and play wiring harness for your 2020 Metris, but we do offer a circuit-protected trailer wiring harness to provide a 4-pole trailer connector that would be pretty easy to install that wouldn't require any cutting or splicing. I'd recommend the Tekonsha ZCI, part # 119250KIT that would install as shown in the linked video. The ZCI uses sensors that clamp around the taillight harness wires that can read the current going through the wires. For a hitch, I'd recommend...
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  • How to Power Small 12V Air Compressor Using Trailer Connector
  • We do indeed have an adapter that will convert your 7-way to a 12V power outlet. You'll need part # PK11896. Or if you'd prefer something a bit more permanent, you could install something like # DG6112VP in the inside wall of the truck bed and simply tap it into that 12 volt feed to the trailer connector.
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  • Is the 7- and 4-Pole Trailer Connector Socket a Fit for Ford Trucks
  • The 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring # HM40975-11998 is a hard wire application, as you can see in the linked installation video we made of this being put on a 2008 Ford F-250. If you only need to connect the plug, which is 7- and 4-Pole Trailer Connector Socket # HM40975, that is a direct replacement for many different years, makes and models of Ford trucks with a factory 7-way; for example it is a fit for a 2018 Ford F-150. If you let me...
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  • 7-Way and Brake Controller for International 4300
  • You'll need to use the # 119147KIT that you referenced to install first a 7-way on your dump truck and then to convert to a 7-way you'd just need the # 37185 or if you plan to install a brake controller # ETBC7. For a controller the Draw Tite iCommand # 5535 would be a really easy solution as it works well, is reliable and has a great price.
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  • Parts Needed to Install 7 Way Connector on 2020 Toyota Highlander
  • We have just what you're looking for. If you don't already have a 4 way plug on your 2020 Toyota Highlander, you'll need to start by installing one, since those provide the base connections needed to install a 7 way. For the 4 way plug you'll want to use the Curt # C76CR, which will tee into your driver and passenger side tail lights. If you've already got the 4 way connector, you'll just need the 7 way which can be installed using the # ETBC7L. The ETBC7L will plug into the 4 way and...
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  • Installing 7-Way Trailer Connector in Bed of 2006 Chevy Silverado 2500
  • Assuming that the 7-way on the bumper is from the factory and the tow package harness can be unplugged from the rear of the connector, using a T-connector like # 41157 is what I'd recommend. Simply temporarily unplug the connection at the rear of the factory 7-way and plug the # 41157 inline as shown in the linked video.
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  • How To Convert 4-Way Trailer Connector On 2012 Toyota Highlander To a 7-Way
  • In order to convert the four way trailer connector on a 2012 Toyota Highlander to a seven way trailer connector you simply need an adapter. The correct adapter will be based on whether or not the trailer has brakes. If there are no brakes simply use the Adapter 4-Pole to 7-Pole and 4-Pole part # 37185. If there are brakes simply use the Universal Installation Kit for Trailer Brake Controller part # ETBC7 and then a brake controller of your choice. I recommend the Tekonsha Primus IQ Trailer...
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  • Replacement Junction Box for etrailer 7-Way Upgrade Junction Box Kit
  • I wonder if the box was stressed in some way when bolting it to the trailer. Maybe one of the install bolts was pulled the box in a direction that stressed it. That said, for just the box you'd want the part # 3375601101 which is an exact replacement for what comes with the # e99011.
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  • Recommended Trailer Wiring Harness for a Boat Trailer
  • The Optronics 25 foot 4 Way Wire Harness # A25W2GWB will be a good option. This will generally have enough length to cover most trailers. I will also recommend adding in a few of the Spectro Self-Stripping Connector with Waterproof Sealant # SWC501746-1. These will make splicing into the # A25W2GWB significantly easier. Especially for your side marker lights.
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  • Can 7-Way Be Added to Freightliner Semi Truck
  • We can help with a basic 7-way and wiring but we do not have anything that's going to actuate ABS brakes. You can hardwire in a 7-Way, # HM47210 though. For this 7-Way the white wire is ground, yellow is left turn signal and brake lights, green is right turn signal and brake lights, brown is the tail light wire, red is auxiliary power, blue is output to electric brakes, and purple is reverse lights. If the turn signals and brake lights are not combined on the same circuits then instead...
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  • Will Curt 5th Wheel/Gooseneck Custom Wiring Harness for Aluminum Beds C57010 fit 2019 Ford F-250
  • I checked with Curt and the Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector for Aluminum Beds # C57010 WILL fit your 2019 Ford-F-250 with a factory 7-way so you did not order the wrong item. This harness will give you a 7-way and it does have a sharp 90-degree angle to fit in the sidewall of your F-250's bed, just like the Bargman # 54701-007-010 so you can stick with the Curt # C57010 and it will work great for you.
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  • Should the 12 Volt Circuit On the Adapter 4 Pole to 7 Pole with Test Lamps Stay On All the Time
  • In regards to the Adapter 4 Pole to 7 Pole and 4 Pole w/Test Lamps part # C57674, the 12 volt power circuit (black wire) will remain active at all times if connected directly to the battery. That said, the LED on the trailer connector doesn't draw enough power to drain the battery if that is what you are worried about. If you only want the circuit active while the vehicle is running then you will need to install the Tow Ready Battery Isolation Solenoid part # TR118665 which works as an...
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  • Troubleshooting Damaged Trailer Wiring Connector on 2002 Ford F-350
  • If the in-bed 7-Way on your 2002 Ford F-350 was damaged then you likely need to replace the entire wiring harness with something like the Hopkins # 41157. It would be best to inspect the connectors for any damage as well. As far as fuses go, if you turn to page 162 in your copy of the owner's manual you should see that the fuses in locations 6, 38, 101, 115, and 305 are for the various trailer functions. Aside from this if you're still having issues you'd need to take your pickup to...
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  • 4-Way Flat to 4-Way Round Trailer Plug Wiring
  • It may seem odd to clarify, but we sometimes have customers describe things differently than we may. So if you are looking for the connector between a 4-way flat on your vehicle and the 4-way round connector a towed vehicle would plug into you simply would need the Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat # ADP001. If you needed a longer connector you can use # Adapter 4 Round to 4 Flat # 47465. If you are looking for a long trailer wiring umbilical cord, you would...
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  • How To Replace the 4-Pole On a Blue Ox Base Plate Kit with a 6-Pole
  • The 6-Way Super Sealed Connector with Cable part # 50-86-007 has mounting holes spaced 2-7/8" to 3-3/8" apart. That said, if you have the Blue Ox Base Plate Kit part # BX2628 on your 2013 Ford Edge then you will want to use the Blue Ox 6-Pole, Round Pin, Trailer Wiring Socket part # BX294-0902 which is designed exactly for this base plate kit and will be a direct replacement. Then, in order to run the charge line to the battery you can use the Battery Charge Line Kit for Towed Vehicles...
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  • Fifth wheel Wiring Recommendation for my 2007 Ram 2500
  • I have exactly what you need but the Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness part # 54701-009 is designed for Ford. Instead use the Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness part # 50-97-410 this will give you exactly what you need to get this installed. It will plug in directly between your current plug for you 7-way on the rear of the truck. This will give you one both in bed and on the bumper. Check out the video we did on the installation of it that I have...
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  • 5th Wheel Hitch Rails And 7 Way Connector For 2019 Ram 2500 Without Puck System
  • It is possible that your old rail system may fit your new 2019 Ram 2500 without prep package, but without knowing the part number or previous vehicle that you had, it is difficult to say for sure. I went ahead and gathered some information on 5th wheel rail kits that are a fit for your 2019 Ram without prep package and you can see if your current rail system happens to match one of the part numbers. Demco Hijacker Premier Series Above-Bed Base Rails and Custom Installation Kit for 5th...
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  • Trailer Connector Recommendation for 2018 Toyota Highlander
  • The correct connector will depend on the trailer you're planning on towing. If the trailer has a simple 4-pole trailer connecter, I'd recommend the Tekonsha # 118449. The connector/harness comes in 2 parts, the converter box and the harness with the 4-pole connector. Both pieces would install into the factory connetors located under the rear hatch threshold as shown in the provide photo. The converter plugs into the 10 pin socket closer to the driver's side and the trailer connector itself...
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  • How To Tow a Gooseneck Trailer with Brakes Using a Semi Tractor
  • In order to haul your gooseneck trailer with a fleet of semi-tractors you will need to make your own adapter harness which will then make for a plug and play connection but they don't make anything pre-assembled for this out of the box to my knowledge. In order to make the adapter you will need the Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector part # PK11700, the Roadmaster Brite-Lite Wiring Converter part # RM-732, and the Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer...
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  • Recommended Replacement Molded 7-way Trailer Plug and Cord
  • The Epicord # 277-000143 7-way plug you'd looked at would indeed make a better connection than something like the # H20044 that just has the single contact. Keep in mind, the wire color coding on this plug/harness might be different than what you already have, so be sure to look at the chart on the # 277-000143 product page that lists the wire colors and their purpose. Are you having issues with the plug not staying fully seated? Because the spring loaded lid for the trailer connector...
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  • How To Tow a Boat Trailer That Has A Reverse Lockout Using a 2020 Hyundai Palisade
  • There are a few options here for you to tow your boat trailer and be able to backup with the trailer attached and the brakes not locking up. The most cost effective option is a wiring adapter, the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter part # 20036. The downside of this option is that you have to splice into the factory reverse light wire on your vehicle. If you don't want to do this then you can either install a trailer coupler with manual lockout like the Brake Actuator with...
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  • What Is Needed to Tow 5th Wheel Trailer With 2020 Ford F-150 With 5-1/2 Foot Bed
  • You can tow a 5th wheel with your 2020 Ford F-150 with a 5-1/2 foot bed, but you will need a standard/fixed 5th wheel hitch and a Sidewinder rotating pin box. The reason for that is the Sidewinder will move the pivot point back to the turret, which allows for the needed clearance so your 5th wheel trailer does not crash into your F-150's cab. The correct Sidewinder will depend on your 5th wheel trailer's pin box model number, as you'll need that in order to know the correct fit. For...
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  • Wiring Third Brake Light for Truck Topper on 2012 GMC Sierra
  • Unfortunately, your photo didn't come through, but we get asked this question fairly often. There is a bundle of wires under the brake pedal of your 2012 GMC Sierra that will have an orange wire that should be used to power the third brake light of the camper shell. This orange wire is in the same bundle as the brake controller wires in the photo attached. If you want to capture the signal at your tail lights then you will use the Curt Vehicle to Vehicle Converter # C56196 to separate...
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  • Is Wishbone 4-Way Required for Trailer With 4-Way but 5 Wires
  • Yes you should! You are on the money with what you need, a wishbone-style 4-way wiring harness for your trailer. With this style, the white is ground, yellow is left turn/brake, green is right turn/brake, and the two brown wires are the running light wires. I'm not sure the length you need though, or if 35 feet might be too long, which is the length of the 4-Way Trailer Wiring Harness - Wishbone Style # A35W42B. We do have different lengths available, which I'll list for you just in...
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  • Solution for Needing Vertical 2-Way Trailer Connector
  • You might be able to look at the manufacturer of the connector on the lid to see if you could contact them. Or you could keep the # 337TC2012 and instead replace the female connector you have now with the part # 337TC1012 which matches.
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  • Parts Needed to Install Brake Controller in 1989 Ford F-350
  • To install a 7-way and a brake controller in your 1989 Ford F-350 you will need the 7-way kit part # 20023 a brake controller like the Draw Tite iCommand # 5535 and a little more wiring. For a wiring kit to install the brake controller to the 7-way you would want the Wiring Kit for 2 and 4 Brake Electric Brake Controllers # 5506. This will provide the power source and ground for the wiring for the brake controller. You will need to test the wires from the brake pedal switch of your...
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  • Parts Needed To Bypass TIPM On a 2006 Dodge Ram
  • In order to bypass the TIPM on a 2006 Dodge Ram you'll indeed need both the Upgraded Circuit Protected Tail Light Converter Hardwire Kit w/ 4-Pole Connector and Circuit Tester part # 119178KIT and Universal Installation Kit for Trailer Brake Controller part # ETBC7. The Upgraded Circuit Protected Tail Light Converter will obtain the trailer lighting signals from behind the tail lights therefore won't be tied into the trailer lighting circuits. The Universal Installation Kit will then wire...
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  • Trailer Wiring Options for a 2018 Mercedes-Benz Metris
  • The Tekonsha Kit # 119190KIT is a universal wiring harness which is why it is confirmed to fit your 2018 Mercedes-Benz Metris. There haven't been any custom wiring harnesses for a Mercedes-Benz Metris yet but the closest thing you can get to that is the ZCI Kit # 119250KIT (also from Tekonsha) which uses special splices that don't actually cut your wiring like the quick splices do with the 119190 kit that you referenced. We don't carry the 119191-21 kit you referenced but from what I could...
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  • Recommended Trailer Hitch Receiver and Wiring Harness for 2014 Chevy Camaro
  • We can get you the whole package for your 2014 Chevy Camaro, and let's start with the best hitch, which is the Draw-Tite Trailer Hitch Receiver # 24850. The Draw-Tite is easily the best option because unlike other hitches for your Camaro it does not require you to drill into your frame for the installation, which is good for the vehicle and also makes for an easier install. Then for the wiring harness, the correct fit is going to depend on if your Camaro has LED taillights or not....
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  • Looking to Adapt a 6 Round Vehicle Plug to 7 Blade Trailer Plug
  • The Hopkins 6-Pole to 7-Pole Trailer Wiring Adapter # 47435 will definitely work as an adapter, but you will indeed have no reverse lights. I do also need to mention that the 6 Round style plug is not going to be a very common style so it may not be a bad idea to upgrade it to a standard 7 Blade. The Hopkins Adapter 4-Pole to 7-Pole and 4-Pole # 37185 will require some cutting and splicing to get installed, but will match the 7 Blade on your trailer. This also includes a 4 Flat plug...
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  • Making 7-Way to 6-Way Coiled Adapter with Alternate Pin Out
  • Best option would be the Bargman 7-way part # WG54006-046 which has a molded 7-way on one end and then unconnected wires on the other. You could then wire this to the part # PK11604 based on the pinout that you need.
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  • Comparing Curt Trailer Wiring Harnesses for 2007 BMW X3
  • Both of the Curt wiring kits you referenced are a fit for your 2007 BMW X3 but the part # C59236 is a higher amp rated version. It is rated for 5 amps for the stop/turn circuit and 7.5 for the running lights. Whereas the # C59496 is rated for 3 amps and 6 amps respectively. What this means is that the higher rated version would withstand trailer wiring shorts better before damaging itself.
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  • Powering Signal Lights on Trailer Towed By Semi Truck with 7-Way Round Connetor
  • The 7-Way round on your Peterbilt Semi features separate circuits for its brake and turn signal lights, while your gooseneck trailer will have the brake and turn signals combined. This is why the brake lights and turn signals aren't behaving when connected using the 7-Round to 7-Blade Adapter # PK12-724 that you referenced. To resolve this all you need to do is add a the Roadmaster Converter # RM-732 to your existing setup before the adapter. This will combine the separate circuits...
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  • Different 4-Way Connector Styles and Adapters
  • There are not two different 4-pin round connectors; there are just two types of 4-pin connectors, 4-flat such as the Hopkins Endurance 4-Way Flat Trailer Connector # HM48110 and 4-round such as the Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Connector # PK11402. The 4-round is more rare than 4-flat so you are less likely to see it. If you have a 4-round on your vehicle you can use the Trailer Connector Adapter - 4-Way Round to 4-Way Flat # ADP001. I have also added a link to...
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  • What is the Difference between the Hopkins Trailer Wiring Harnesses HM20041 and H20046?
  • There isn't really a lot of differences between the Hopkins 7-Way RV Style Connector with Molded Cable - 8' Long - RV Standard # H20046 and Hopkins 7-Way Blade Style Connector with Molded Cable - 8' Long - Auto Standard # HM20041. Both are 8 feet long and will fit in the standard 7 Way vehicle plug and even use the same gauge wires. However, it is actually the colors of the wires that are different. The # HM20041 will use the auto-industry standard: Black (12v Power), White (Ground),...
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  • 2017 Nissan Armada SV Trailer Wiring Recommendation
  • Since your 2017 Nissan Armada does not have trailer wiring currently what you'll need is a hardwire style 4-way kit tested as a fit for your vehicle like the Tekonsha part # 119147KIT. This taps into the taillight circuits of your vehicle to give you the 7-way you need. 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 # ETBC7 instead of the # 37185 and a...
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  • Wire Gauge Size of the 40 Ft 5-Way Trailer Wiring Harness A40W5B
  • The 40 Ft 5-Way Trailer Wiring Harness part # A40W5B uses 20 gauge wire according to Optronics. This is pretty standard and will work for the vast majority of trailers without issue.The Wesbar 5-Pole Flat Connector part # W002290 uses larger 16 gauge wire if that is what you are looking for.
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  • Trailer Wiring Harness for 2018 Mitsubishi Outlander Sport
  • I have a much easier trailer wiring solution for your 2018 Mitsubishi Outlander Sport with the Tekonsha kit part # 118538 which plugs inline with the taillight connectors of the vehicle. I attached a link to the install instructions for this kit that shows exactly how it installs as well.
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  • Troubleshooting 2002 F-250 Towing Horse Trailer with Working Exterior Lights but No Interior Lights
  • It sounds like the interior lights on your trailer are powered through the 12 volt circuit on your Ford's 7-way. So, start by testing to make sure that pin is active. On a standard RV style 7-way, this is located at the 1 o'clock position. I've attached a diagram for visual reference. Using a tester like # PK12741 would be the easiest. You could also simply have a case of corrosion on/in the connectors that is preventing the +12V auxiliary power from reaching the trailer. If this is...
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  • What Vehicle Trailer Wiring Kit To Add 7-Way Connector To GMC W3500
  • To install a 7-way connector on your GMC W3500 to fit the 7-way connector you referenced in your picture you will first need to install a 4-pole wiring harness such as the Tekonsha Upgraded Heavy Duty ModuLite Circuit Protected Vehicle Wiring Harness # 119190 on your vehicle. I recommend adding the Tekonsha ModuLite Installation Wiring Kit # 118151 which includes the wire needed to run the power wire to your vehicle's battery, connectors, and a fuse holder to protect your wiring. I attached...
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  • Could 12 Volt Accessory Circuit of Trailer Wiring Power Furrion RV Cameras
  • A buzzing sound with the # FR69SR would not be a normal occurrence. Especially if it's at the cameras and the adapter. It's hard to say exactly what's going on but I would check to see if you feel it getting warm potentially. You could run the 12 volt accessory circuit to the camera instead but this would cause the cameras to be turned on all the time when the trailer is connected. You could use 12 gauge wire ran from the 7-way like 12-1-1 (sold by foot).
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  • Troubleshooting Trailer Brake Wiring on Coupler Solenoid For Backing Up
  • It is not wired correctly. The wires coming out your coupler are for the reverse lockout solenoid. The wire connected to ground is correct, but the wire connected to brakes at your junction box # e99011 is not correct. That pin is for electric trailer brakes and not a hydraulic surge brake coupler. You will want to connect that coupler wire to the reverse light circuit instead. This is designed to give power to that solenoid when you shift into reverse allowing that solenoid like #...
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