Filter Questions and Answers:

reset filter

Expert Answers about Wiring


  • What is the Wire Gauge on 10 Inch Electric Trailer Brake Magnets
  • The magnet wires on Electric Trailer Brake Assembly # A35W42B are 18 gauge. The wiring going to the brakes from a trailer connector is usually larger such as 10 gauge # 10-2-1.
    view full answer...

  • 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...
    view full answer...

  • 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...
    view full answer...

  • 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...
    view full answer...

  • 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 # 331-EBRH-ACCV2, 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...
    view full answer...

  • 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...
    view full answer...

  • 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....
    view full answer...

  • 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...
    view full answer...

  • 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...
    view full answer...

  • How to Rewire Vintage Trailer with 7-Way Connector and Parts Needed
  • Most of us aren't electricians, but that doesn't mean wiring a trailer is beyond us. It will take a little bit of time, but I wouldn't consider it a difficult DIY project by any means. So, to wire your 1977 Serro Scotty vintage camper, I recommend using the following parts: - Mighty Cord 7-Way RV-Style Trailer Connector # A10-7W6 (6 ft long) - this is a high quality molded trailer connector with corrosion resistant terminals. - etrailer Trailer Wiring Junction Box - 7 Terminal # e99009 ...
    view full answer...

  • Flat Towing Wiring Kit for 2019 Chevrolet Equinox
  • If you have the 2019 Chevrolet Equinox Premier you can use Roadmaster diode wiring kit # RM-15267 along with 6-pole plug # RM-910030-8 that you will install in place of the included 7-way. An article on wiring is linked to assist you with this process. If you do not have the Premier you'll instead need one of the kits shown on the linked page, such as magnetic light kit # TL21RK or bulb and socket kit # RM-152-LED.
    view full answer...

  • 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,...
    view full answer...

  • 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...
    view full answer...

  • 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.
    view full answer...

  • 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...
    view full answer...

  • 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...
    view full answer...

  • 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...
    view full answer...

  • Making a 6-Way Square Adapter for an Artic Fox Camper
  • We do have 6-Pole Square Trailer Wiring Connector Kit (Car and Trailer Ends) # 37995 that you can use for your Arctic Fox camper. This is both the male and female ends. But the wires on them are 18 gauge. You could replace the ground and power wires with 10 gauge wire if you wanted to though it make take a little persuasion to get the 10 gauge wire to mate up to the pins in the connectors. We sell 10 gauge wire # 10-1-1 by the foot or you can get # 10-2-1, also sold by the foot, which is...
    view full answer...

  • Comparing Bargman Heavy Duty 7-Way Trailer Connector # 54006-057 to # 54006-009
  • The difference between the Bargman 7-Way, RV-Style Connector w/ 6' Heavy Duty Insulated Cable - Trailer End # 54006-057 and the 7-Way Molded Trailer End with 6' Cable - HD Blue Insulated # 54006-009 is the color coding of the wire inside. For instance # 54006-057 uses the red wire for left turn and # 54006-009 uses the red wire for the 12V power. The color coding between these two will be different even though the function locations will be identical on the 7-way blades. I've...
    view full answer...

  • Hooking a Gooseneck Trailer with RV 7-Way Plug to 1999 International 9100 7-Way Round Plug
  • The first thing that you need is the Pollak Trailer Connector Adapter # PK12-724 which converts the 7-Way round connector on your 1999 International 9100 to a 7-Way blade style connector. This will plug into your 9100 and provide a pace to connect the gooseneck trailer wiring. The next step is to then use the Roadmaster Brite-Lite Wiring Converter # RM-732 on your trailer side wiring right behind the 7-Way. This converter takes separate brake and turn signals and combines them so that...
    view full answer...

  • 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...
    view full answer...

  • 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...
    view full answer...

  • Wiring Diagram for Blue Ox 4-Way Round Connector
  • The Replacement 4-Wire Plug for Blue Ox Coiled Electrical Cord - Vehicle End - Qty 1 # 294-0805 is wired as the diagram shows. This is the color and function from the back of the connection where the wires to your towed vehicle attach. I've also attached a similar installation video to assist. You can use the Blue Ox 7-Wire to 4-Wire, Coiled Electrical Cord - 7' Long # BX88254. If you want a slightly longer cord with the visual to glow at night, you can use the Hopkins Endurance Flex-Coil...
    view full answer...

  • Will a 2012 Mercedes-Benz ML350 Need to be Recalibrated After Installing Trailer Light Wiring
  • You will want to install the Tekonsha ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector # 119250KIT for wiring on your 2012 Mercedes-Benz ML350. This product draws power from the 12V lead that is run to the battery and then sends a signal to the trailer connector once it detects that your light functions are being utilized. It does not require anything to be recalibrated on any vehicle that it is installed on. I confirmed this with my contact at Tekonsha....
    view full answer...

  • Is There a Difference Between 7-Way RV Standard and Traditional
  • The only difference between 7-way traditional and standard wiring is the colors of the wires. The functions and pin outs are the same so an adapter isn't needed. What you have is possibly a short between the two circuits due to exposed wire or maybe they were wired backwards. You'd want to go over the wiring of the 7-way and check for exposed wire or corrosion and fix as needed.
    view full answer...

  • 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...
    view full answer...

  • Installing a Towed Vehicle Battery Switched Charging Line on 2016 Ford F53 Chassis Motorhome
  • For your 2016 Coachmen Mirada 35LS, to find a switched power line I recommend using a circuit tester like # 40376. Then you will use the Roadmaster Battery Charge Line Kit for Motorhomes # RM-156-75 with solenoid # TR118665 after the circuit breaker with the center post connected to your switched power line. This with make sure that power is only drawn from the motorhome when the ignition switch of your Coachmen is turned on. Then on the towed vehicle (toad) side you can use the Roadmaster...
    view full answer...

  • 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...
    view full answer...

  • Grounding Peterson Trailer Tail Light Part # V457L to Trailer Frame
  • The Peterson Trailer Tail Light # V457L that you referenced is designed to ground through the mounting hardware which means that a bolt runs through the base which is attached to the ground circuit of the light and when it contacts the metal frame of your trailer the ground circuit is complete. If you wanted to ground this light with a wire you'd need to run the ground wire to the bolt you use to attach the light between the base and the trailer frame. The white wire on your 7-way wiring...
    view full answer...

  • 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...
    view full answer...

  • 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...
    view full answer...

  • Replacement 7-Way Trailer Wiring Harness for 2011 Chevy Silverado 2500HD
  • If you are referring to the actual wiring then you will want to use Pollak Wiring Harness part # PK11-934. This harness will require you to cut and splice but it would be the only option we have for you as we do not carry OEM parts. However, if you are referring to just the connector then you can use the Twist-in 7-Pole, RV-Style Trailer Connector part # PK11916 which install in the same position and way as the factory 7-way trailer connector on your 2011 Chevrolet Silverado 2500HD. I...
    view full answer...

  • Installing Curt 5th Wheel/Gooseneck Wiring Harness # C56070 on 2017 Ford F-250
  • The Curt 5th Wheel/Gooseneck Custom Wiring Harness # C56070 referenced in your question will plug into the factory US connector on your 2017 Ford F-250 and the extended 7-Way will work perfectly. The issue with regards to fit on your 2017 model, as you alluded to, is the truck's aluminum body which requires some additional mounting hardware. The needed hardware is included with the Curt # C57008 Harness which is why it is the recommended option. What you can do to use the more economical...
    view full answer...

  • 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...
    view full answer...

  • Installing a Trailer Battery Charge Line from Vehicle Trailer Connector
  • To charge your trailer battery when you look at the 7-way trailer-side connector the 11 o'clock pin will mate up to your 12V signal from your vehicle. With most trailer connectors like # H20043 this will be the black wire. That black wire simply connects using 10 gauge butt connector like # DW05745-5 to 10 gauge wire sold by the foot # 10-1-1 which will connect to your trailer battery positive terminal. As you stated the negative terminal of the trailer battery will be connected to the...
    view full answer...

  • Recommended Fifth Wheel Wiring Connection for 2017 Ford F-350 Super Duty
  • I spoke with a representative of Bargman, who told me that while # 50-97-410-010 will work with your 2017 Ford F-350 with the fifth wheel prep, there have been very, very rare occasions where it can read a trailer is connected when it is not. To avoid that issue, it is recommended that you use Bargman # 54701-007-010 for fifth wheel wiring with your '17 F-350. I've included a link to a video review of this product for you to take a look at.
    view full answer...

  • How to Determine Wire Functions on Trailer to Install Furrion Vision S Side Cameras
  • You can determine which black wire on your trailer is ground by hooking your trailer up to your tow vehicle and turning your running lights on. This will cause one of the wires to have power. You can determine which is which using a circuit tester like part # PTW2992 or a multimeter like part # PTW1714. Once you know which wire carries which function you can attach the wiring of the Furrion Vision S Side Cameras # FCE48TASL. The black is ground, the brown is running lights, and the red...
    view full answer...

  • 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...
    view full answer...

  • 7-Way Round to 6-Way Round Adapter Recommendation
  • Sounds like you are looking for an adapter like the part # HM47445 which will go from a 7-way round on a tow vehicle to a 6-way round on a trailer. I attached a review video for more info on this as well. The adapter you referenced is for a 6-way round to a 7-way blade.
    view full answer...

  • 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...
    view full answer...

  • 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.
    view full answer...

  • Recommendation for Adding 7-Way Trailer Connector to Hyundai Santa Fe Sport with 4-Way Connection
  • For your adapter from the 4-way to a 7-way, I recommend the Hopkins Adapter 4-Pole to 7-Pole and 4-Pole # 37185. This will give you the option of adding the 12V power, the brake controller output, and the reverse lights. Even if you don't add those functions, you still need to install the white ground wire for proper function. If you want to add those features, I recommend the wiring kit # 5506. The trailer side 7-way will work well with this adapter on your Hyundai Santa Fe Sport....
    view full answer...

  • Adding a 7-Way Trailer Connector to a 212 Subaru Outback and How to Charge Trailer Battery
  • I do have a video that will be very helpful when installing a 7-Way connector on your 2012 Subaru Outback. I have linked that video for you. But not all parts of the video will apply to your situation simply because of the type of brake controller you are using. So you can just ignore those parts. You will need # ETBC7 which comes with the 7-Way and the wiring and other accessories you will need. The installation is not difficult and if you have even a little experience with automotive...
    view full answer...

  • 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.
    view full answer...

  • 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...
    view full answer...

  • Trailer Hitch Recommendation for 2019 Honda CR-V
  • For your 2019 Honda CR-V the etrailer.com hitch # E98848 is a confirmed fit and would work well. It has a 2 inch opening and plenty of capacity and also has a concealed crosstube so it's not as visible. For a no-splice trailer wiring kit that fits your vehicle you'd then want the ZCI Kit part # 119250KIT. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4...
    view full answer...

  • 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...
    view full answer...

  • 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.
    view full answer...

  • How Long is the 8 Foot Cord # 54006-044 when Coiled Not Stretched?
  • The Bargman 7-Way, RV-Style Connector w/ 8' Long Coiled Cable - Trailer End # 54006-044 is 13 inches at the coil then 10 inches at the connector and 7 inches at the pigtail. We also have the coiled 6 foot # WG54006-043 and the coiled 12 foot # WG54006-046 which will only be longer or shorter in the coiled section.
    view full answer...

  • Trailer Wiring for 2005 Dodge Ram
  • Are you saying your factory 7-way is not working due to bad relays on your 2005 Dodge Ram? If so the T-Connector Vehicle Wiring Harness # C55504 should allow you to add a 4-flat but I cannot guarantee it will work if there is an internal issue with the wiring. This harness plugs into connection points behind your Ram's tail lights if there are any connectivity issues with your relays I would not be able to guarantee this would bypass those.
    view full answer...

  • Is There a Wiring Harness That Fits 2012 BMW X5?
  • There is a wiring harness available for your 2012 BMW X5 that will allow you to tow your popup camper. The ZCI Circuit Protected Vehicle Wiring Harness # 119250KIT will install in your SUV via clamps and a module that connects to your car battery to get power. This will not require you to go to your dealer for any type of programming and is a straightforward install. I recommend using mounting bracket # 18144 to keep the 4-way in place as you tow. I also recommend checking out Ball Mount...
    view full answer...

  • How To Mount Pollak Connector PA66GF30
  • The Pollak Connector PA66GF30 I believe is the same if not similar to the Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket part # PK11893. If that is the case you can use the Mounting Bracket part # PK12711U and Curt No-Drill Bracket for 6-Way or 7-Way Round Trailer Connector Mounting Bracket part # C57202 to mount this to the trailer hitch.
    view full answer...

  • Installing a Brake Controller on a 2018 Jeep JL Wrangler Unlimited with Factory Tow Package
  • While I cannot confirm a brake controller wiring harness for the 2018 Jeep JL Wrangler Unlimited there is still a way to install a brake controller. First you would need a 4-Way wiring harness. We do have trailer wiring harnesses for the 2018 Jeep JL Wrangler Unlimited. For models without the factory tow package Curt has # C56407 and Tekonsha has # 118786. There is a note on the Tekonsha harness though that states it does not currently work with Rubicon or Sahara models. Adding a...
    view full answer...

  • Male and Female Single Pin and 2-Way Pins for Trailer Wiring
  • I think you may have your part numbers swapped around but the part numbers you mentioned all can work together. The 2-ways part # 337TC1002 and # 337TC2002 are perfectly compatible with each and the single pins # PK11851 and # PK11852.
    view full answer...

  • 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...
    view full answer...

  • Connecting Ram with 7-Way Blade Connector to 5th Wheel Trailer with 7-Way Female Round Pin Connector
  • It looks like your Ram is equipped with a standard 7-Way female blade style connector but your trailer has a 7-Way round pin connector, specifically the female end which is usually on the tow vehicle side. Because of this unorthodox setup there isn't a single cable available that will connect the trailer to your Ram but we do have the pieces needed to do this. In order to connect your Ram to the trailer you can use a 7-Way loop like the Bargman # 50-67-210 and then an adapter like the...
    view full answer...

  • 2003 Ford Ranger 4-Way Trailer Wiring Recommendation
  • If you really wanted to hardwire in a 4-way you could use the part # 18252 for trailer wiring in your 2003 Ford Ranger but we have a custom fit, plug-and-play option that will work much better and install a lot easier with the part # 118344.
    view full answer...

  • Trailer Hitch and 7-Way Trailer Connector for a 2015 Mercedes Benz GLA250
  • You certainly can add a hitch and wiring to your 2015 Mercedes GLA250. For a trailer hitch the most popular option is Curt hitch # C13197. This is a Class III hitch with a 2 inch receiver rated for 350 pounds tongue weight and 3,500 pounds gross trailer weight. For wiring in order to add a 7-Way you will first have to install a 4-Way. The only harness available that does NOT require splicing into the vehicle wiring is the ZCI harness # 119250KIT. Then to add a 7-Way you will need #...
    view full answer...

  • Adapter from Truck with 7-Blade to Camper with 7-Round Connectors
  • An extension is going to be male on one side and female on the other. We have a 4 foot extension, part # TLW6042, that's a 7-way on each end. We don't carry an 8 foot long extension but we do have a 10 foot, part # TLW6510, that should work for you.
    view full answer...

  • Connecting 7-Way Trailer Connector to 2015 Subaru Outback Wagon
  • Yes, you need to combine the stop and turn signals because the trailer connectors use combined wiring. There's a couple ways you can do this. The easiest from scratch is to get a 4-way wiring harness that's plug and play into your 2015 Subaru Outback and then convert it to a 7-way. You can use part # 118467 for the 4-way and we have our own conversion kit using part # ETBC7. Part # 118467 includes a converter to combine the wiring and then use our kit to convert that 4-way to a fully...
    view full answer...

  • 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...
    view full answer...

  • Correct Pin Out for Truck and Trailer 7-Way Blade Connectors
  • Attached are some photos of the typical wiring functions for truck and trailer 7-Way blade connectors, like parts # PK11893 and # PK12706. If you typical pull a trailer that has a 7-Way connector then you want to follow the pin out diagrams I mentioned. If the chippers that you tow have a different configuration then the Hopkins Adapter # HM47535 will likely do the trick because you can change it so that the center pin is either related to the electric brakes or the 12V power. If you...
    view full answer...

  • Trailer Plugs Compatible with 1 and 2 Pole Pollak Trailer Sockets
  • Both trailer connectors you speak of are sockets that would typically be used on the vehicle end of the trailer/vehicle connection. One is a one pole, the other a two pole so they wouldn't be compatible with each other. The Pollak # PK11851 is a single pole wiring socket, which would be compatible with a # PK11852 single pole plug The Pollak # PK12801 2-pole socket would be compatible with a 2-pole plug, part # PK12800.
    view full answer...

  • 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.
    view full answer...

  • Tekonsha TR20117 or 6562 7-Way Trailer Connector Tester for 2017 Ford F-350
  • You would need to go with the # TR20117 because your vehicle was manufactured after 2013. I believe the factory brake controllers in the later model Ford trucks were proportional, which means that you won't get any output on the brake pin when the vehicle isn't in motion, only when the manual brake switch on the controller is activated. The easiest way to test the wiring on the trailer is to use a 12 volt battery, ground the negative terminal to the trailer frame and apply voltage to...
    view full answer...

  • Parts Needed to Add 7-Way and Brake Controller on 2017 Subaru Outback Wagon
  • In order to install a fully functional 4- and 7-Way connector on your 2017 Subaru Outback Wagon you will need to start with a 4-Way harness if you don't already have one. For this I recommend the Tekonsha T-One Vehicle Wiring Harness # 118467. This custom harness will simply plug into factory ports located in the rear cargo area on the Outback. I have attached an installation video that you can use for reference. Then with the 4-Way installed (or if you already have one on the vehicle)...
    view full answer...

  • 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.
    view full answer...

  • Are Available 7-Way Connectors Wired for US Made Trailers
  • The 7-Way trailer wiring sockets we have available such as the Pollak Metal # PK12703 referenced in your question do indeed feature the standard US pin configuration. I have attached an image that shows the pin locations and functions that you can use for reference. This is a 7-Way for the vehicle end. For the trailer end you will use # PK12702. Keep in mind though that the actual wire color used on both the vehicle and trailer can differ. Because of this it is always best to test the...
    view full answer...

  • 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...
    view full answer...

  • 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.
    view full answer...

  • Brake Controller Recommendation for 2015 BMW X5 with Factory 7-Way
  • Since your 2016 BMX X5 has a factory 7-way already all you need is a brake controller to activate your trailer brakes and you'd be set. So the easiest to install brake controller that also works really well is the Curt Echo Mobile part # C51180. Basically this just plugs into an active 7-way and once you sync it to your phone it's ready to go. This brake controller is proportional which means it senses the amount of deceleration your tow vehicle is applying and applies the trailer brakes...
    view full answer...

  • 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...
    view full answer...

  • Recommended Trailer Wiring Harness for 2018 VW Tiguan
  • Both the Tekonsha # 119190KIT and the Zero Contact Harness # 119250KIT that you referenced are universal kits that will work on your 2018 VW Tiguan. With that being said, there are now custom fit options available for your 2018 model Tiguan that will be a MUCH easier installation. For this, I recommend the Curt T-Connector # C56403. This will install by simply plugging into factory ports located inside the rear cargo area of the vehicle. Once the connections are made, you will just...
    view full answer...

  • No Brake and Turn Signals On Boat Trailer with 5-Way to 7-Way Adapter
  • For starters, have you tested the pins inside the 7-way trailer connector on the vehicle to make sure these circuits are active? If not I would do just that but the Adapter 7-Pole to 4-Pole and 5-Pole part # 37385 will only work for you if both the vehicle and trailer are wired the exact same way. I have attached the standard(ish) trailer wiring diagram for you. If I had to guess, I would say that the vehicle side is correct but the trailer side does not match this. Therefore, I recommend...
    view full answer...

  • How To Add Third LED Brake Light On Trailer
  • If you would like to add a third brake light that is LED I recommend to use the Curt 2-To-3-Wire Tail Light Converter part # C56196 because it is more compatible with LED lights in our experience compared to the Tow Ready version part # 118158. Since your trailer has a combined wiring system the the converter will separate it so the third brake light will only come on when braking. I also recommend to use diodes to prevent feedback with Roadmaster Single Park Light Diode part # RM-690....
    view full answer...

  • Troubleshooting Trailer Brake Lights and Turn Signals Not Working After Installing 7 Way on Vehicle
  • If you've just installed a 7 way connector like the # ETBC7, you'll want to start by testing the plug on the vehicle using a circuit tester like the # PTW2979 to make sure that each pin is operating properly; you can refer to the photo attached or a helpful article that I've linked for information on testing the circuits. I would also recommend making sure that your ground wire on this harness is firmly grounded to a paint and rust free spot, as ground wires are the most common cause for...
    view full answer...

  • 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.
    view full answer...

  • Can the Custer Trailer Connector Adapter # F77R be Used to Tow a 5th Wheel with a Kenworth Truck
  • The Custer Trailer Connector Adapter # F77R is meant to go from a trailer with a 7-Pole Round connector to a 7-Way Blade connector. I believe that you need the exact opposite which can be found with the Pollak # PK12-724. You will need to take note to see if your 7-Way on your Kenworth has separate taillight wiring or not. If you test the pins on your 7-Way Round with a circuit tester # PTW2992 and find that the stop light signal has its own pin then you will need to splice in a converter...
    view full answer...

  • How to Change Out 4-Way at Rear of Motorhome to Work with 7-Way on Trailer
  • Thank you for the pictures! What you may be able to do is install the Hopkins # HM47210 on your motorhome to replace your current 4-Way round connector. I'm guessing the 2 wires for your brake controller system are for 12V power and for the brake controller signal. If this is the case then you will need to connect the following functions on your motorhome wiring with the following wires from the Hopkins connector: White - Ground Yellow - Left Stop/Turn Green - Right Stop/Turn Brown...
    view full answer...

  • 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...
    view full answer...

  • Availability of 16 Gauge Wire for Trailer Lights
  • The Optronics 4-Way Wishbone Trailer Wiring Harness # A25W2GWB that you referenced has 18 gauge wire for the ground and 20 gauge wire for all of the lighting functions. I check with all of the other wishbone harnesses that we have and they all use similar gauge wiring none of which is 16 gauge. For 16 gauge wiring you can use the Deka Bonded 4 Wire # 16-4B-1 which is sold by the foot. I recommend using heat shrink butt connectors like part # DW05744-10 and the Quick-Fix Replacement 4-Way...
    view full answer...

  • 7-Way Trailer Wiring Configuration
  • If either your vehicle or trailer 7-way wiring does not have all wires connected to activate all of the 6 possible circuits you can make that last connection to activate it. On the trailer side it is really easy to install a new full-functioning 7-way plug by adding a junction box like Epicord # 277-000141. This junction box includes a pre-wired 7-way trailer plug, like the one shown in the linked photo which is wired to the RV standard. By installing this box on the trailer you...
    view full answer...

  • Adapter Solution to Convert Gooseneck Trailer to Fifth Wheel King Pin
  • We have gooseneck trailer to fifth wheel king pin adapters that would work great on your trailer but it really depends on what type of gooseneck trailer you have now. For example if you have a square tube gooseneck you could use the part # BD028965030 or for a round tube part # PKG5-R25-IP. Or you could replace the outer tube as well and use the Bulldog # BD0289590300. For an air to electric brake controller the Hayes part # HA100400C is the kit you want. This ties into the air brake...
    view full answer...

  • Which Pin On a 2018 Ford F-150 Trailer Connector Is For Reverse Lights
  • Yes, the center pin for the 7-way trailer connector on your 2018 Ford F-150 is for the reverse light circuit. If the vehicle is placed into reverse then the pin will become active and send power to the trailer. I have attached a selection of our backup lights for you below. I recommend the Hot-Line LED Trailer Backup Light Bar part # 328-003-6017W because its's easy to install and has LED bulbs. In order to run the power wire from this light to the trailer connector you can use part # DW07550-1.
    view full answer...

  • Diagram of Functions on 7-Way Plug
  • I made a diagram for you which shows the function a 7-way plug for both a vehicle-side plug like what you get with the Hopkins Endurance Quick-Install 7-Way Trailer Connector with Universal Pigtail Harness # HM47210 or Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector # 30717, as well as a trailer-side plug like the 7-Way Molded Connector w/ 15' Cable - Trailer End # 50-67-103 or 7-Way Connector - Trailer End # 54-77-003. I have also added a link to a help article on trailer wiring...
    view full answer...

  • Brake Controller Installation on 2018 Toyota Highlander
  • You'll need to choose a brake controller and the # ETBC7 brake controller installation kit. The install kit includes an adapter to convert the 4 pole you recently installed to a 7-way. I'd recommend a proportional controller like the Tekonsha Primus, part # TK90160. Your Highlander is very sensitive to power feeding back into the brake lamp circuit, so instead of the pigtail included with the Primus, you'd need to use the # 7865 which has a diode installed on the brake lamp circuit to...
    view full answer...

  • Is There a 4 Round to 7 Round Adapter
  • We have a possible solution for you but there is no such thing as a 4-round to 7-round adapter; you would need to make your own. What you could do is use the Custer Trailer Connector Adapter - 4-Way Flat to 7-Way Round # KIT-7P-4, cut off the 4-way flat and wire in the RoadMaster 4-Wire Connector # RM-910030-2.
    view full answer...

  • Installing a Brake Controller on a 2015 Ford Transit T250 with Factory Tow Package
  • To the best of our knowledge there is no plug-in adapter that will work on your 2015 Ford Transit T250. There should be a bundle of wires under the driver side dash that you can connect the adapter that you have picture to. Simply cut off the end that doesn't connect to your brake controller and use a circuit tester like part # 40376 to test for the following functions that you can splice your harness to: Blue - Brake Controller Output Black - 12V Power White - Ground Red - COLD Side...
    view full answer...

  • 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.
    view full answer...

  • 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.
    view full answer...

  • 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.
    view full answer...

  • Recommended 7-Way Trailer Connector for a 2004 Dodge Sprinter Van
  • In order to install a 7-way trailer connector on a 2004 Dodge Sprinter Van you must first start with a 4-way as there are no plug-in-play 7-way options, the Curt Powered Tail Light Converter part # C59236 is what I recommend. This can then be converted to a 7-way using the 4 to 7-Way and 4-Way RV Adapter part # ETBC7. The 4 to 7-Way and 4-Way RV Adapter also comes with everything you need to install a brake controller like the Redarc Tow-Pro Liberty Brake Controller part # RED24FR.
    view full answer...

  • Trailer Hitch Recommendation for 2019 Mitsubishi Outlander Sport
  • Yes, the Curt hitch part # C13079 is a confirmed fit for your 2019 Mitsubishi Outlander Sport and would work well as it's a 2 inch hitch with plenty of towing capacity. If you have LED taillights the trailer wiring kit you need is the part # 118538. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8...
    view full answer...

  • Trailer Wiring Harness for 1996 Jeep Grand Cherokee
  • The Hopkins # HM48895 is intended for use with vehicles that have LED tail lights and is not the recommended harness for your 1996 Jeep Grand Cherokee. There are 4-way harnesses with converters that will fit your '96 Grand Cherokee that I recommend using: the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118349 if your Jeep does NOT have the factory tow package or the Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector #...
    view full answer...

  • 2018 Honda Odyssey Trailer Wiring Harness Installation
  • With any 4-pole wiring setup the flat connector can be either routed outside the vehicle and permanently installed in a mounting bracket setup as with parts # 18144 and # 18136 or it can be left inside the vehicle so that it is not continuously exposed to the elements. This is true for Tekonsha universal hardwire harness kit # 119147KIT that you referenced as well as for the custom-fit items made specifically for your 2018 Odyssey, which are shown on the linked page. These include 4-pole...
    view full answer...

  • 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...
    view full answer...

  • 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...
    view full answer...

  • 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.
    view full answer...

  • What Plug Fits the 337TC1002 Horizontal 2 Pin Connector?
  • To fit the Buyer's Products 2 Pin Horizontal Socket # 337TC1002 you can use the Buyer's Products # 337TC2002 which is a 2 Horizontal Pin plug. This plug and socket require 6 gauge wiring and can carry up to 40amps. As an aside, if you're spending a lot of time dry camping like you mentioned in your email, you may want to have a look at the Redarc In-Vehicle BCDC Dual Input Battery Charger # 331-BCDC1240D which is ideal for battery banks rated 200 amp hours or higher. This will allow...
    view full answer...

  • Recommended Motorhome 7-Way to Towed Vehicle 7-Way Tow Bar Wiring
  • For your 7-way to 7-way motorhome to towed vehicle, I recommend the Bargman 7-Way, RV-Style Connector w/ 8' Long Coiled Cable - Trailer End # 54006-044 along with the Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End # PK12706. This will give you a 7-Way RV Blade to matching 7-Way with a coiled cable to keep it from dragging on the ground.
    view full answer...