See what our Experts say about this Hopkins Custom Fit Vehicle Wiring

• Location of Factory Wiring Connector for 2021 Ford Explorer Limited
  Hello Ken; what wiring harness are you trying to install? Do you have the factory tow package on your 2021 Ford Explorer? If you don't have the factory tow package there won't be a wiring connector at the rear of the vehicle. If you have the factory tow package there will be a plug behind the bumper that attaches to the # HM40975. If you do not have the factory tow package you need to install the Curt 4-way # C56093 which plugs into the connection points in the rear cargo area as seen...
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• How to Activate the Factory Trailer Towing Package on a 2000 Chevy Silverado
  The wiring will already be run on your 2000 Chevy Silverado. There will be 1 of 2 wiring situations on your truck. The wiring for the 7-Way will be located above the spare tire. If it is just bare wires with no plug, you will need to hard wire one in. The harness we have for this wiring situation is Pollak 7-Pole, RV-Style Trailer Connector Socket w/ Wiring Harness and Mounting Bracket, # PK11898. If your truck has a plug, then you will need to use a connector like the Replacement Multi-Tow...
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• 7-Way Wiring Configuration for Slide-In Truck Camper
  Your slide-in truck camper does not have electric brakes so the blue brake circuit wire from its 7-way connector is not used. All other lighting functions as well as 12V auxiliary power will be maintained on the other circuits. Please refer to the linked photo for the standard wiring/function configuration for RV-style 7-way connectors.
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• How to Wire a 7-Way Trailer Connector to a 2005 Chevy Silverado
  It sounds like you have found the bundle under the rear of your 2005 Chevy Silverado that would be used for wiring up a 7-way. In the bundle of wires, look for the following colors: Yellow = left turn and brake light Dark Green = right turn and brake light Brown = tail lights White = ground Light Blue = not used (camper shell light) Light Green = reverse lights The definitive way to determine the wire functions is to use a circuit tester, # PTW2993, and test each wire while someone sits...
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• 7 and 4-Way Trailer Wiring Connector Recommendation for 2015 Volkswagen Tiguan
  The connector you sent in a picture of is the standard 7-way connector that the Hopkins part # HM40975 is designed to fit. If you plug the # HM40975 into that connector you'll have both a 7 and 4-way trailer wiring connector active.
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• Is There a Difference Between Hopkins 7 and 4-Way Kits 40974 and 40975
  Basically they are the same connector with just a slightly different part number. We carry the part # HM40975 and if you ordered the 40974 from someone else (not recommended haha) you'd get the same thing which just a different part number on the box. I attached an install video for this kit for you to check out as well.
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• Recommended Trailer Hitch for a 2020 Ford Ranger
  The trailer hitch that I recommend for a 2020 Ford Ranger is the Curt Trailer Hitch Receiver part # C13417 which is a custom bolt-on fit that does not require any cutting or drilling. The process should actually only take you around 20 to 40 minutes. I have attached an install photo for you as well. For a trailer wiring harness, the T-One Vehicle Wiring Harness part # 22124 is your best option as it does not require any splicing therefore is almost entirely plug and play. I also recommend...
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• What 4-Way and 7-Way Connector do You Recommend for My 2021 Ford Bronco?
  From the sound of your question, it sounds like you are wanting an option for both a 4-way and a 7-way to install into your 2021 Ford Bronco and do not currently have any wiring. For a plug-in 4-way harness, I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # TK99VR. However, you need a separate wiring harness in addition to the # TK99VR to have the 7-way installed. For that part, that is the Universal Installation Kit for Trailer Brake Controller - 7-Way RV...
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• Installing a 7-Way Trailer Connector on a 2013 Ford E-250 Van
  I checked with Tow Ready about 7-Way connector # 118261 and it is not a confirmed fit for the 2013 Ford E-250 van. Since there are no other options and since you have some factory wiring already, I recommend using 4 and 7-Way connector # HM40975 with harness # PK11998. You will need to test the wiring on the vehicle end with a circuit tester such as # PTW2993 to determine the functions. Then you can install the harness accordingly: Red - Left Turn and Stop White - Ground Blue - Electric...
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• 7-Way Wiring Harness Installation on a 2004 1500 Chevrolet Silverado
  You can use the Pollak 7- and 4-Pole Trailer Connector Socket, item # HM40975, if you are replacing an existing 7-way connector on the rear of your 2004 Chevy Pickup. If you need to install the 7-Way connector for the first time the factory connection point is going to be on the left side of the vehicle above the spare tire. If there is a plug on the end of the wiring harness located above the spare tire, it will simply plug into the rear of the HM40975. If the harness ends in bare wires,...
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• How to Mount 7- and 4-Pole Trailer Connector on 2024 Ford Bronco
  Hi Stephen; the design and size of the Curt # C76WR really doesn't allow for a mounting point for the # HM40975. The only option to mount the bracket is on the bumper beam next to the hitch or on the plastic as seen in the picture below where another customer mounted a 4-way bracket.
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• Troubleshooting No Power at 12 Volt Pin on 7-Way for 2014 Ram 1500
  Typically, this has to do with a missing or blown fuse. According to the online version of your owner's manual, the Trailer Tow 30-amp pink fuse can be found in cavity F30, in the fuse box (Power Distribution Center) under the hood of your 2014 Ram 1500. If the fuse is present and in good working condition, I recommend testing for power behind the 7-way connector. If you do get power there, but not at the pin, the solution is to replace the connector with # PK11893 for just a 7-way or...
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• Parts Needed to Add a Brake Controller on a 2013 Jeep Grand Cherokee With or Without the Tow Package
  Since you don't have the trailer towing package on your 2013 Jeep Grand Cherokee you do need to start off by installing a 4-Way connector. I recommend the Tekonsha T-One # 118425 as we have found Tekonsha to be one of the most reliable wiring companies that we carry. To have 7-Way and 4-Way connectors on your Jeep you also need the Universal Wiring Kit # ETBC7. This connects to the T-One and give you both connections that you need. It also includes everything you need for the 7-Way to...
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• Recommended Trailer Wiring Harness for 2015 VW Touareg
  The Hopkins 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket # HM40975 referenced in your question is intended as a factory replacement. If your VW Touareg came with a factory 7-Way connector and you need to replace it, this item will work perfectly. Otherwise, if your vehicle does not have an existing factory connector at the rear bumper, I instead recommend the T-One Vehicle Wiring Harness # 118668. This custom-fit harness will install by connecting directly to the built-in...
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• Wiring For 7-Way Connector on 2004 Chevrolet Silverado 2500
  On your 2004 Chevrolet Silverado 2500 the factory wires should be light green, dark green, blue, yellow, red, brown, and black. The functions of those wires should be as follows: light green - reverse lights dark green - right turn/brake blue - electric trailer brakes yellow - left turn/brake red - 12-volt power brown - running lights black - ground I would also recommend testing the functions of your wires with a circuit tester, part # PTW2993, to verify the function of the wires on...
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• Factory 7-Way Wiring Color Code and Replacement Harness for 2018 Ford F-150
  I took a look at the online version of the owner's manual for your 2018 Ford F-150 and was able to locate the wiring color code for the factory 7-Way trailer harness on the truck. The wires leading up to the factory plug are as follows: Yellow - Left turn/stop lamp Green - Right turn/stop lamp Brown - Running lights Blue - Electric Brakes Orange - 12V battery power Grey - Reverse lights White - Ground If you find that the harness is fine and you just need a replacement 7-Way/4-Way connector...
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• 12V Power Pin on 7-Way of 2013 Ford F-150 Isn't Receiving Power
  Since you aren't getting any kind of power signal at the pin in the 1 o'clock position on the 7-Way on your 2013 Ford F-150 and you have installed the relay/fuse that is needed, my first thought is to make sure that there is actually wires running to the back of your 7-Way for those pins. For some reason (and it isn't always consistent) truck manufacturers will sometimes install the 7-Way but not run the wiring all the way down the frame to the 7-Way. Check to make sure that the wiring...
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• Troubleshooting Electric Trailer Brake System on Trailer Towed by Chevy 2500 Series Truck
  Discovering why the trailer brakes are not getting power will be a process of elimination. I am not aware of what you have and have not checked, so I will describe the whole troubleshoot process. Start with the brake controller itself. Is it properly adjusted and leveled (if necessary) according to the instructions? Is it getting power? To determine if the controller is receiving power, you can use a circuit tester like part # PTW2993 on the black wire that feeds the controller to ensure...
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• Will Hopkins 7- and 4-Pole Trailer Connector Socket Fit 2024 Ford Bronco?
  Hello Tim, thanks for reaching out. The Hopkins # HM40975 has a standard USCAR connection on the back. As long as this "adapter" you are referring to is this same connector (pictured below), the # HM40975 will work for you with no additional parts needed. If your adapter is not the USCAR connector just let me know or even email me a picture and I am happy to take a look and get back to you.
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• How to Identify the Wire Functions of Trailer Wiring on a 2002 GMC Sierra
  I can help you determine the functions of the wires in the bundle you sent in a picture of by testing them with a circuit tester like part # PTW2993 but we don't have a way to identify them just based on color. So have a buddy apply the various taillight functions of your truck while you probe all of the wire cores with the tester and you'll be able to know for sure the functions.
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• Trailer Function Fuse Locations on 2016 Dodge Ram 3500
  There is no relay switch for your 2016 Ram 3500. I have attached a diagram of the fuse box. Here are the fuse's that control the towing functions on your truck. \F11 (30 amp pink) - Integrated Trailer Brake Module F28 (20 amp blue) - Trailer Backup Lights F30 (30 amp pink) - Trailer Tow Receptacle F29 (20 amp blue) - Trailer Parking Lights F53 (20 amp yellow micro fuse) - Trailer Tow L Turn/Stop F81 (20 amp yellow micro fuse) - Trailer Tow R Turn/Stop If you are in need of fuses I recommend...
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• How to Add a 7-Way Trailer Connector to a 2015 Ford Explorer
  In order to add a 7-way trailer connector to your 2015 Ford Explorer, I recommend the T-One Vehicle Wiring Harness part # 118272 which is a complete plug and play option that will not require you to cut or splice any wires. In order to mount the 7-way to the rear of the vehicle you will need to use both part # 18140 and part # PK12711U. Tekonsha brand wiring products are considered as one of the best in the industry. If you need help with installation you can referred to the attached video...
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• Should Stop Light Switch Wire On Trailer Brake Controller Have Ground Or Power?
  The red wire on the trailer brake controller that goes to the cold side of the stop light switch is a power wire, and should not be grounding. This wire gives 12 volts of power only when the brake pedal is switched, and is what tells the controller to send power to the electric brakes. On your 2008 Chevrolet Suburban this wire is the light blue/white wire. I recommend double checking that you hardwired the controller to the factory run wires under the dash correctly, as it sounds like...
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• Parts Needed to Add a 7-Way Trailer Connector to a 1998 Dodge Ram 1500
  If your 1998 Dodge Ram came with a 7-Way and you need a replacement you can use Pollak 7- and 4-Pole Trailer Connector Socket, # HM40975, and Pigtail Wiring Harness, # PK11998 if needed. The Hopkins Endurance Multi-Tow 7-, 5- and 4-Way Flat Trailer Connector, # HM48470, can be used as well but it is a hardwire connector meaning you would have to attach existing wires from the truck to the connector according to the wiring diagram I have linked for you. If the truck came with a factory...
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