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Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Item # 42615
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Custom Fit Vehicle Wiring

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Custom Fit Vehicle Wiring 42615 - Custom Fit - Hopkins
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Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting or splicing required. Call 800-298-8924 to order Hopkins custom fit vehicle wiring part number 42615 or order online at etrailer.com. Free expert support on all Hopkins products. Guaranteed Lowest Price and Fastest Shipping for Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (26)
  • Q & A (48)
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Hopkins Custom Fit Vehicle Wiring - 42615

  • Custom Fit
  • Trailer Hitch Wiring
  • Hopkins
  • 4 Flat
  • No Converter

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting or splicing required.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection point behind rear tire
    • Plug in connector
  • Protective connection terminals resist corrosion
  • Comes with dust cap for 4-way flat connector, cable ties, and terminal grease packet for electrical connections
  • 90-Day limited warranty


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the rear tire mud flap on the passenger's side.


Once installation is complete, the 4-way flat connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.


It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.



42615 Plug-in Simple Hopkins T-Connector with 4-Pole Trailer Connector

Installation Details 42615 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 42615

Average Customer Rating:  5.0 out of 5 stars   (26 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting or splicing required.

- 42615
by:
Jeep

The Trailer Light assembly for my Jeep fitted perfectly. I was kept informed throughout the delivery process. Good job well done 571456



- 42615
by:
1998 Jeep Wrangler

Very easy install and works perfect. Simply plug it in and done 540005



- 42615
by:

Easy as pie , took 15 min . Great product! JB Allred 452217



- 42615
by:
2002 Jeep Wrangler

Great follow up ,don't hesitate to do buisness w/these guys 338142



- 42615
by:

870935



- 42615
by:
2000 Jeep TJ

Installation on my 2000 Jeep TJ was easy. No issues. I used my own zip ties. Ones provided were a small. 777890



- 42615
by:

Perfect fit, easy install. 770435



- 42615
by:

Very easy to install just connect to the taillight harness and attach the ground wire, 10 minute job.This harness will save you the time and aggravation of a splice in harness. 656445



- 42615
by:
1998 Jeep Wrangler

‘98 Jeep Wrangler, absolutely plug and play, very simple installation. Pull down the cover behind the rear passenger tire, reach up inside the body to find the factory harness, unplug the connector and plug the new harness into it. Put the cover back over the opening. Did need a drill to run in the new grounding wire but they even supplied the self tapping screw for that. Great product! 640338



- 42615
by:
Jeep

Wiring harness for my Jeep works great. 609986



- 42615
by:

Great service and very happy with the p roduct 591629



- 42615
by:
2004 Jeep Wrangler

Plug and play worked perfect 523890



- 42615
by:
2001 Jeep Wrangler

product was great, fit and worked without any extra labor 523107



- 42615
by:
2002 Jeep Wrangler

The installation video made the install a breeze. 513390



- 42615
by:
2006 Jeep TJ

Worked perfectly! 439241



- 42615
by:
2001 Jeep Wrangler

This is the only way to hook up to your vehicle's wiring harness, quicker too. 426025



- 42615
by:
1998 Jeep Wrangler

I am an electrical contractor by trade so makings splices is not an issue. I am so glad I purchased this trailer wiring harness, unplug one plug and you are in business and did not have to tamper with the existing wiring harness of my jeep. I taped in a magnet to the wiring harness so when not in use I could Tuck it in behind the bumper. 357664



- 42615
by:
1999 Jeep Wrangler

It was as advertised. I am happy with it. 289415



- 42615
by:
1998 Jeep Wrangler

Thanks for the wiring harness, it was an easy install, plug and route the wiring to the trailer hitch. Sure beats cutting and splicing into the vehicle harness, chasing the wires for identification etc.! Simple instruction included with the location of the plugs to interface with. Best trailer hitch wiring I 've done in 20 years. 279401



- 42615
by:
2000 Jeep Wrangler

Got my items before due date happy with it all 266889



- 42615
by:
2002 Jeep Wrangler

Products work good, whats left to say 232470



- 42615
by:

Fast shipping happy with service. 157552



- 42615
by:

Simple instructions, excellent harness 29951



- 42615
by:

Quick shipment great tracking easy to i nstall. 19417



- 42615
by:

The package had all the parts I needed to do the installation including instructions that made sense. The process of finding what I needed to buy, getting it ordered and then getting it installed was made simple by etrailer.com. Thanks. 16237


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Ask the Experts about this Hopkins Custom Fit Vehicle Wiring

  • USA Made Trailer Wiring Harness Recommendation for 2003 Jeep Wrangler
    I wish I could say yes to that but no they are not. For a made in the USA trailer wiring harness confirmed as a fit for your 2003 Jeep Wrangler we have the Curt kit part # C55363 which would work great. I attached an install video as well.
    view full answer...
  • Can Magnetic Flat Tow Lights Install on 2017 Jeep Wrangler
    For vehicles like yours that don't have an easily accessible steel portion of the vehicle for magnets to attach to we recommend the tailgate style light kit like the part # EZT20B which closes in the rear door and gives you a setup similar to the magnetic kits except without requiring a steel surface. Check out the picture I attached to see how it installs. I also attached an install video for this kit for you to check out as well.
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  • Is Mopar Wiring Harness 68321424AB Needed to Flat Tow a 2016 Jeep Grand Cherokee Uplander?
    The Mopar Harness Part Number: 68321424AB is not required to flat tow a 2016 Jeep Grand Cherokee Uplander. That part was required for Cherokee models in 2016 but not the Grand Cherokee models. If you don't yet have the component for towing, I recommend the following parts: -Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # RM-521440-4 -Roadmaster Falcon 2 Tow Bar - Motorhome Mount - 2" Hitch - 6,000 lbs # RM-520 -Safety Cables # RM-643 -Roadmaster Diode 7-Wire to 6-Wire...
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  • Is The Mopar Recreational Flat Tow Wiring Kit Part 68321424AB Required To Flat-Tow a Jeep Cherokee
    The Mopar Recreational Flat Tow Wiring Kit part 68321424AB is required on select Jeep Cherokee's in order to activate the electronic power steering (EPS) system while the vehicle is in tow mode. This part must be obtained from the dealer but since you have a part number now that should make things easier on their end. If they still cannot find this then you can have them reference the Technician Service Bulletin 08-010-17 (unless superseded). If you can provide me with the year of your...
    view full answer...
  • Flat Towing Lights Recommendation for 2016 Jeep Wrangler Since Magnetic Can't be Used
    The removable lighting solution to use on a 2016 Wrangler is the part # EZT20B as this will install between the tailgate. The magnetic lights aren't a fit for your vehicle realistically since there isn't a place to attach them. A customer of ours used this kit on his 2015 Wrangler and here is how he said he was able to install the kit. I open the tailgate to first hang the passenger side light then close the tailgate which serves to lock the passenger light in place and allow enough...
    view full answer...
  • Both Turn Signals Light Up and All Lights Go Out with Brake Lights On Boat Trailer
    It does sound like a ground issue. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to clean and corrosion free...
    view full answer...
  • Lighting and Wiring Options for Flat-Towing a Jeep Wrangler Behind a Motor Home
    What you need is a light kit specifically for flat-towing. The Plug-N-Tow TM Vehicle Wiring Harness, # 42615, would be if the Jeep were towing a trailer and not for activating its lights while it is being towed. There are a few options for lighting when flat-towing a vehicle. I have included an FAQ article that covers the various options. What it boils down to is how often you will be towing the Jeep behind the motor home. If you do not plan on towing it very often, the best way to...
    view full answer...
  • Troubleshooting 7-Way Connector on Motorhome When Lights Don't Work On Towed 1997 Jeep Wrangler
    It does sound like there may be a problem with the wiring of the RV connector as you mentioned. Especially since you said it works fine when the Jeep is connected to another vehicle. You may want to also check the fuses on the motorhome to make sure they are not blown and causing the issue. I have attached a helpful article that shows 7-way connectors and how they are typically wired. You will want to make sure you test the pins on the motorhome connector and they match exactly to the...
    view full answer...
  • Boat Trailer Running Lights Go Out when Stepping on Brake Pedal
    This sounds like a ground issue. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to clean and corrosion free bare...
    view full answer...
  • Wiring to Flat Tow a 2012 Jeep Wrangler Behind an RV
    A wiring harness that is used to power lights on a trailer cannot be used in reverse to power the lights on the vehicle when it is being flat towed. This is unless it is a specially made harness designed for this purpose. There are numerous wiring kits available for the 2012 Jeep Wrangler, see link. The easiest to install that does not require cutting and splicing wires is the Hopkins wiring kit, # HM56200. It will just plug in line with the vehicle tail lights and it has a 4-Way to...
    view full answer...
  • Electrical Connection from Motor Home to a Jeep Wrangler for Tail Lights when Flat Towing
    If you already have the diodes installed, all you have to do is it connect the motor home to the Jeep Wrangler. The diode kit probably came with a 4-Way flat trailer connector that should be at the front of the vehicle. In a perfect world, the motor home would have a 4-Way flat receptacle. If that is the case, just plug then into each other. If the motor home or the diode kit had a different type of connector, you will need an adapter or you may have to hardwire in the correct connector...
    view full answer...
  • Recommended Flat Towing Light Setup For Easy Installation on 2018 Jeep Wrangler
    As long as you've installed a tow bar wiring kit on your 2018 Jeep Wrangler that allows your vehicle lights to work in conjunction with the signals from your RV, you won't need to add additional lights when you're flat towing. It sounds like you may not have anything setup on your Jeep yet, so I recommend using the Pilot Magnetic Tow Lights - Red LEDs - 4-Way Flat and 7-Way RV Connector - Wireless # NV-5164 since it is a completely wireless system that plugs into a 7 way or 4 way connector...
    view full answer...
  • Is Mopar 68321424AB Flat Tow Wiring Kit Needed to Flat Tow a 2017 Jeep Cherokee Latitude
    Although Jeep corrected the problem beginning with the 2019 model, the 2017 Jeep Cherokee Trailhawk will indeed need the Mopar 68321424AB flat tow wiring kit to activate the electronic power steering system while the vehicle is in tow mode. You'll need to obtain the part from your Jeep dealer. To flat tow your Jeep, you'll need a tow bar, base plates, safety cables, a wiring harness to join the Cherokee to the tow vehicle and a supplemental braking system. In some cases, a high/low...
    view full answer...
  • Tow Bar Wiring to Flat Tow a 1995 Jeep Wrangler Behind a Motor Home
    Hopkins trailer wiring harness # 42615 does not fit a 1995 Jeep YJ. Also, it is a harness meant for towing a trailer WITH a Jeep rather than to tow the Jeep behind a motor home. I have included a link to the wiring harnesses for flat towing the Jeep. There isn't a plug and play type of harness for this particular vehicle. What I recommend and what our installers like to install because it is the easiest is the bulb and socket kit # RM-155. This bypasses the vehicle wiring so there is...
    view full answer...
  • Trailer Lights Not Working with 2008 Toyota Sienna with Never Used Tow Package Wiring
    Since you have not used the trailer wiring harness on your 2008 Toyota Sienna until recently then there are a couple of likely things happening. First, the pins on the vehicle side connector could have corrosion in them even if the harness was stowed away the whole time. that can happen to untreated metal. Using a wire brush or screwdriver to clean out the metal contacts will help. The other thing to look at is the ground connection. This is usually a white wire. It needs to be connected...
    view full answer...
  • Tow Bar Wiring to Flat Tow a 2004 Jeep Liberty Behind a Motor Home
    We have several tow bar wiring harnesses that you could use on your 2004 Jeep Liberty. For a harness that plugs in line with the vehicle tail light wiring you could use Hopkins # HM56203. If you want something that is going to bypass the vehicle wiring completely you can use bulb and socket kit # RM-155 or a magnetic kit such as # C-ATL20A. And for a kit that hardwires into the vehicle tail light wiring you can use diode kit # 154-792-118158. I have linked some videos for you to view....
    view full answer...
  • How to Mount Magnetic Tow Lamps on Fiberglass Hardtop Roof of 2007 Jeep Wrangler
    I have two easy solutuions for you. First, you could use the Custer EZ mount tow lights, part # EZT20B. The lamp mounts would close in the hatchback of your Jeep's hardtop either at the very top of the glass or along side the glass near the top, this should raise the lamps up above the bikes and provide more visibility for the lamps. Another option would be Magnetic Light Mounts like part # TLP01. You'd shut the mounts in the windows of the driver and passenger side and then the magnetic...
    view full answer...
  • Recommended Trailer Wiring For 2002 Jeep TJ
    Since you have no wiring on yoru 2002 TJ we can get you everything you need. First you will need to install a 4-way wirinig harness. I recommend the T-One Vehicle Wiring Harness, part # 118409. This simply installs to the connection points located under the rear bumper on both the driver and passenger side. If your trailer has brakes then you will also need a brake controller so that the braking action in your Jeep activates the brakes on the trailer. The brake controller I recommend...
    view full answer...
  • Trailer Wiring and Hitch Recommendation for a 1999 jeep Wrangler
    Basically, there are 2 different ways on which you can install trailer wiring on a 1999 Jeep Wrangler. The Tow Ready Custom Fit Vehicle Wiring, # 118409, plugs in line with the wiring behind the vehicle tail lights. Installation may take a little longer than the other harness but these types of connections are popular and work well. I have included a link to the installation details and a video showing a typical installation for you. The Hopkins Harness, # 42615, plugs into a connector...
    view full answer...
  • Which Trailer Wiring Harness To Use On A 2000 Jeep TJ Wrangler Sport
    Both the Tow Ready T-One Wiring Harness # 118409 and the Hopkins Plug-N-Tow Wiring Harness # 42615 will work on your 2000 Jeep TJ Wrangler Sport. The difference is what you mentioned, how they install to the vehicle. The Tow Ready harness uses T-One connectors that will plug into connectors on each side of the vehicle. The connectors are located under the Jeep, behind the rear bumper. The white ground wire will need to be attached to a good,clean ground on the vehicles metal frame. The...
    view full answer...
  • Troubleshooting Weak Trailer Taillights
    At least one of the problems you have is insufficient grounds. First you will want to make sure that all of your taillights are grounded to a clean metal surface. You also want to make sure the main ground for the trailer is connected to a clean metal surface. If the bulbs of your running lights burn out when you run a jumper wire on the ground circuit that would most likely indicate that you are overdrawing the circuit or you are jumping the wrong circuits which is causing a short. I...
    view full answer...
  • Troubleshooting Trailer Blinker that Stops Working when Brakes Applied
    First thing you should do at this point is test the 4-way of the wiring harness with a circuit tester part # PTW2993 for voltage on all of the right pins when the taillight signals are being applied. Just like in the video I attached. If the voltage checks out there but the trailer lights still don't function right then the problem is on the trailer wiring. That would mean that problem is either due to a ground issue or a short issue. Make sure that the trailer side connector are...
    view full answer...
  • Need For MOPAR Flat Towing Wiring Kit for 2017 Jeep Cherokee 4x4 Limited
    The recreational towing section of the owner's manual for your 2017 Jeep Cherokee states that using the wiring kit for this particular vehicle is indeed necessary. They go on to caution that "Failure to use the proper Mopar wiring kit to power the steering system during recreational towing may damage the vehicle’s steering system and/or other vehicle components." This being said, my research has seems to contradict this. I've found a Mopar tech bulletin (08-022-16) that states that...
    view full answer...
  • Correcting Trailer Ground Problem Turn Signals Blink Once and Stop When Brake Is Pressed
    it sounds like you have a ground problem somewhere in the trailer wiring or on the trailer wiring harness installed on the vehicle. Ground problems will make the trailer lamps do all sorts of wacky things. With the running lights and the brakes on, activating the turn signals will draw maximum amperage on the trailer wiring system. If you have a ground problem, that's when it will typically show itself. Make sure the trailer connector on the vehicle is securely grounded to clean metal,...
    view full answer...
  • Trailer Lights Go Out when Brakes are Applied
    What you describe is a ground problem with the trailer wiring. Starting at the rear of the vehicle, confirm that the ground connection on the Plug and Tow Harness is securely fastened to bare metal. If there is undercoating, corrosion, or grime built up under where you attached the ground, you will not have a good connection. Next, examine the point on the trailer where the trailer connector ground wire attaches. This can usually be found on the trailer tongue. Make sure the wire is in...
    view full answer...
  • Trailer Lights Not Working Unless Truck Lights are Off and Brake Pedal is Pressed
    Since the truck works with any other trailer just fine the issue must be on the trailer. Check its connector and make sure it is clean and free of corrosion inside where the wires attach and outside on the pins. It could also be a ground issue. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light but can show up any time. The main connector grounds should be...
    view full answer...
  • Is Mopar Wiring Harness Still Needed when Flat Towing 2019 Jeep Cherokee Trailhawk Elite
    You do not need the Mopar tow bar wiring harness anymore for the 2019 Jeep Cherokees like your Trailhawk Elite thankfully. At one point the harness was needed to prevent steering issues when flat towing but Mopar has fixed the issue on your vehicle currently. What you will need is a base plate kit confirmed as a fit for your vehicle like the Roadmaster part # RM-521451-5. In addition to the base plates, you will also need a compatible tow bar, safety cables, lighting, and supplemental...
    view full answer...
  • Troubleshooting No Signal on Yellow Wire for Hopkins # 42615 on a 2003 Jeep TJ
    Even though the plug was found on the driver's side it does sound like your mechanic found the correct plug for the Hopkins # 42615 on your 2003 Jeep TJ. If the lights on your Jeep are working normally then that leads me to believe that the wiring harness is messed up somewhere. Try piercing the wiring harness at different points to see if the signal is lost somewhere. Typically this would be a ground issue but if your ground is secure and connected to a clean, bare-metal surface then...
    view full answer...
  • Is the Brake Light Relay Needed when Installing Invisi-Brake on a 2012 Jeep Wrangler
    There are a lot of caveats for when the brake light relay # RM-88400 is needed or not needed. But we have taken the guess work out for you. The relay is required on the 2012 Jeep Wranglers. If you turn the key to the position it is supposed to be in for flat towing (consult the vehicle owner's manual) that is the position of the key you would use to test whether or not the brake lights come on.
    view full answer...




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Info for this part was:

Expert Research:
Mike L
Expert Research:
Sarah L
Expert Research:
Patrick B
Expert Research:
Michael H
Expert Research:
Jeff D
Expert Research:
Jameson C
Expert Research:
Adam R
Expert Research:
Jeffrey L
Video Edited:
Jacob T
Installed by:
Cole B
Updated by:
Alexander C

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