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  4. Trailer Hitch Wiring
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Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors

Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors

Item # 30955
Our Price: $39.47
You Save: 24%
Custom Fit Vehicle Wiring

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Hopkins Trailer Hitch Wiring - 30955
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Hopkins Custom Fit Vehicle Wiring - 30955

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • 7 Round - Blade
  • No Converter
  • Hopkins

Custom 7-Way US car connector (car end) fits trucks and SUVs equipped with factory socket.

  • Durable plastic shell
  • Provides Both a 7-Way and a 4-Way Covered Trailer Connector
  • Mounting Bracket Included
  • Visible wire measures 6-3/4" from vehicle end to trailer end
  • Measures 10-1/2" from vehicle end to back of trailer connector
Product detail

Close-up Picture of the Connector

Product detail

Picture of the OEM connector on a Chevy truck. The connector is located above the spare tire and simply plugs in to the 7-Way and 4-Way Replacement Connector.

40955B Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors


Installation Details 30955 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Video of Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Trailer Wiring Harness Installation - 2018 Jeep Grand Cherokee

Speaker 1: Today on our 2018 Jeep Grand Cherokee, we're going to be installing Hopkins 7-way and 4-way trailer connectors, part number 30955. This 7-pole connector's going to plug directly into your factory wiring harness, providing you with all the necessary trailer signals from both a 4-pole flat connector and a 7-pole connector. Both connectors are going to provide you with the necessary lighting signals, such as your left turn, right turn, brake lamp and stop lamp signals. Your 7-pole's going to have some additional wiring in it for a brake controller signal, auxiliary power and backup lamps. The 7-pole connector has a spring-loaded door with a seal located on the inside to keep out moisture and corrosion.The 4-pole connector has a dust cap that can be removed and reinstalled to help keep out dirt, debris and moisture. This is ideal if you have multiple different trailers.

If you have a small trailer for hauling things around that just needs lighting, you've got your 4-pole. Let's say you've got a boat trailer to haul a big boat that uses a brake controller. You've got your 7-pole here for that. Whatever situation, you're ready to go.We'll begin our installation by installing our 7-pole bracket onto our hitch. If your hitch doesn't have a built-in bracket, you may need to purchase a short or long bracket.

You can find one of those here at Start by preparing your screw. You'll place on a lock washer, followed by a flat washer, then we'll slide those down through the openings in our bracket. We'll then slide our 7-pole bracket up onto it, and thread the nut on the other side. Then tighten those down with a 10 millimeter socket and Phillips head screwdriver.

Next spot your 7-pole connector by sliding the harness through the small slit at the bottom of the bracket and sliding the longer flathead screws through each of the openings in the face.Then on the backside, thread on your locking nuts. And repeat that for the three remaining screws. Then tighten them down with a flat-bladed screwdriver and a 10 millimeter wrench. Now underneath the vehicle at the rear bumper on the driver's side, you'll find your factory tow connector. Inside there's a dummy plug we'll have to remove.

So you'll push down on the release tab here, and pull out on the dummy plug. Then you can just set this aside. We'll then add some dielectric grease to the terminals inside of our 7-pole. This'll help keep out any moisture and corrosion. Then we can just plug it in. Make sure the connector's fully seated, you should hear it and feel it click into place. Now you want to plug it into your trailer or use a tester, such as the one that we use here at etrailer, part number I26 to make sure everything's working properly. If you don't have any signals out of your tester or your trailer, you may need to go to the dealer and get the computer flash to make it operative.That completes our installation of Hopkins 7-way and 4-way trailer connectors on our 2018 Jeep Grand Cherokee.

Customer Satisfaction Score:

Customer Reviews

Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors - 30955

Average Customer Rating:  4.7 out of 5 stars   (346 Customer Reviews)

2006 GMC Sierra

Exact fit for my 06 GMC Sierra it took longer to get my spare tire down than to install the tow package. My spare was stuck.


Great fit works good has 7way rv plug and the regular flat 4 plug no need for adapters to lose or have stolen.

Jason L.


Been using this plug for a year now still working great


The Curt Trailer Hitch Receiver was easy to install and has worked just fine in pulling my several trailers. For the price, an excellent deal. The 7-Way and 4-Way Trailer Wiring Harness Connector by Hopkins was a disappointment because the cap that doubles as a dust cover and latch to the adapter has come off and missing after a few months. This cap is not replaceable, the whole connector would have to be replaced.

2005 Chevrolet Silverado

Product exactly what I was looking for. Fit factory harness perfectly. Strong and rigid, appropriate mounting hardware. Perfect

2004 Chevrolet Silverado

Perfect! I used this on a single cab Chevy Silverado 1500. Plugged into factory trailer lights near spare tire, mounted it up, plugged in trailer and everything worked just like it should. My truck does not have a spare tire so I removed the spare tire keyhole mount and cut some of the bumper to fit the adapter. My truck did not require a ECM/PCM flash of any kind, although I hear some vehicles may have to.


Easy install. Black plastic cover broke of very quickly.


I installed this today. Took around 90 minutes but part of that was learning how to get the spare out of the way. I drilled two holes in the bottom of the bumper because of where I wanted the connector to be placed. All necessary hardware came with the unit. This was very easy to do after watching etrailer's How To video. Good job guys, great product.


Nice product ,Easy to install and then worked as supposed to . I installed in bumper as opposed to the add on bracket that came with it ,made for a easier way to plug in trailer cord.

2006 Chevrolet Silverado

I bought this 7 way trailer connector to replace a broken one on my 2006 Chevy 2500HD. It was an easy install and only took a few minutes to complete. I tested it with my trailer connected and all works fine.
The shipping was super fast.
Thanks , etrailer.


Cathy T. was very good help. She set me up with the correct parts for our 2001 Chevy so we can have a 7 prong plug in at the bumper and in the box.
We got rid of the cobbled up mess that started giving us trouble and now everything works great. The plug and play took me about 1 1/2 hours to complete. We will do business again if needed. Thanks again Cathy T. and etrailer!


Quick shipping. And best part they sent me the correct hitch and plug in. No complaints here!

2006 Chevrolet Silverado

in my case I have to say that first look at YouTube from there I got the video with the description of the process and the number of the part of there just went to I put the # alone went out it was really easy to send fantastic just wait 4 days in regular shipment for the installed only you see that plug it in thank you I hope that some more will serve..

2002 Chevrolet Tahoe

Bought this 7 way connector to replace my current 5 pin. It fit into the factory wiring and came with a bracket and screws. Fast shipping and 10 minutes to install. Thanks Etrailer


The male prongs on the plug on the wire end were too short and did not engage.
The lights would not work. I bought another brand plug that the prongs were longer on and it worked fine.


The product was an exact one-for-one replacement. However, I ended up having to replace the female connector due to corrosion. This took a bit of time. The result was all new connections that work fine. Thanks for all your assistance.

2007 GMC Sierra Classic

Hitch and wire harness fit great.
was 2 days earlier than expected.
Great job etrailer.


The pictures of the product on the website helped greatly in picking the correct item and it fit and works perfectly. Arrived in just a few days exactly as predicted.


Did not fit well. Had to drill bracket to miss holes in bumper

2007 Chevrolet Silverado

My 2007 Classic Silverado Crew Cab 4x4 did not have a factory hitch receiver, so I selected the 13322 Curt Hitch Receiver because it closely resembles the OEM hitch receiver and attaches to the bottom of the bumper. Installation was easy, as shown in the videos and described by other reviewers. All holes aligned perfectly. I did not remove the spare tire as it is not necessary. I used two jack stands to raise/support the receiver frame in place while I started the first bolts. I had the 22mm and 19mm sockets needed to tighten and torque the bolts/nuts. It looks great and I now am able to tow.

For the wiring I installed the 30955 Hopkins 7-Way and 4-Way Trailer Connectors to the bumper adjacent to the license plate. This required drilling a 2-1/8" hole in the bumper, which was time consuming, but it now resembles a factory installation. I was able to remove the license plate and connect to the factory plug.

I ordered these parts from etrailer for a number of reasons: 1) The website is intuitive and contains a tremendous amount of information for the person who is trying to research product information; 2) the selection and inventory is amazing; 3) the prices are very competitive – free shipping for orders over $99; and 4) the dedicated customer service is outstanding – the email communication is prompt. I ordered on a weekend and it was delivered by the following Friday.
A very positive first experience.


I loved the ease and simplicity of installation. But the first time I used it, the plastic cap broke off and I was told (a year later) that there was no warranty on electronic parts.


Delivered quickly and fit perfectly.

2005 Chevrolet Silverado 1500

Spent a little time on phone with Preston discussing a wiring solution to accompany the trailer hitch desired. He recommended a product and confirmed that it should be a plug and play situation. Long story short, the hitch was bolted up and the wiring functional in 1 hr's time. I had to drill (2) holes to mount the wiring receptacle, but that was expected. Great service, fast delivery, and excellent prices. I'm very happy. Vehicle: 2005 Chev 1500, 4-dr, 6-1/2 ft bed. Note: Factory wiring harness trailer plug-in was located above the spare tire, towards the rear of the vehicle.



Still works great - no issues at all.


This item works as advertised. I have bought several products from etreaier and I have been pleased with every product


Working as it should. I zipped tied it to the hitch. I wish there was another way to mount rather then screwing into bumper.


This muti-tow plug with the wire extension plugged right to the factory truck harness with enough length to mount under the service body's bumper. The local stores plugs would not work for this service truck.

Show More Reviews

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

  • Location for Installing Hopkins # 30955 Replacement Multi-Tow 7-Way and 4-Way Trailer Connector
    You are entirely free to choose an alternate mounting location for your new 7-way as long as your factory wiring harness can still reach its location. Your vehicle and trailer will not care on which side of the hitch their electrical connection is made. I do suggest you first make certain that your trailer connector can reach your new preferred location on the vehicle when the trailer and vehicle are hitched. You also need to be sure the OEM harness on the vehicle (with the round U.S. Car...
    view full answer...
  • Does Hopkins Replacement 7-Way and 4-Way Trailer Connector # 30955 Fit 2006 Silverado 1500
    Hopkins Replacement Multi-Tow 7-Way and 4-Way Trailer Connector # 30955 is a correct fit for your 2006 Chevrolet Silverado 1500 that came with a factory-installed 7-way. This replacement part connects to the round U.S. Car connector at your bumper and provides both a 4-pole flat and a 7-way RV-style blade connector for added towing flexibility. Installation in a 2006 Silverado is shown in the linked video.
    view full answer...
  • What Circuit of 2015 Chevy Silverado Connects to Trailer Battery
    The 1:00 pin of the 7-way at the rear of your 2015 Chevy Silverado is the circuit that would connect to and charge the trailer battery. On a Silverado like yours this circuit can sometimes not be active but with a few connections under the hood the circuit will be active. If you check out the attached help article you can see how this connection would get made on a truck like yours.
    view full answer...
  • Wiring a Brake Controller on a 2007 Chevy 1500
    The brake controller itself will splice into the bundle of taped or banded wires under the dash, usually located above where your left knee would be as you are sitting at the wheel. The wires do now connect color for color. The red wiring harness wire would connect to the black wire on the brake controller, the dark blue harness wire connects to the blue wire on the controller, the light blue harness wire attaches to the red wire on the controller, and the white wire on the harness connects...
    view full answer...
  • Troubleshooting Trailer Passenger Side Stop Turn Circuit Not Functioning
    First thing I would do is ask your buddy what all he messed with, if you can get him to undo the damage he did to your trailer you will be in better shape. It sounds like the original problem you had was just a bad ground on the passenger stop/tail light. Typically light assemblies ground through their mounting hardware so ensuring this light is attached to a clean metal surface would be a great place to start and would most likely fix the problem. I attached a trailer wiring diagram for...
    view full answer...
  • Replacement Trailer 7-Way Wiring Harness to Replace a Damaged One on a 2005 Toyota Tacoma
    If the factory trailer wiring harness on your 2005 Toyota Tacoma looks like the picure I've attached you can use part # 30955 to plug into that connector. This is a 7-way and 4-way connector that has a mounting bracket attached. If you don't have that type of connector or need a different kind of bracket, send me some pictures of what you have and I'll recommend something that works for you.
    view full answer...
    Image 1 for
  • Availability of Trailer 7-Way and 4-Way that Can Have Both Connectors Used at Same Time
    For a similar 4-way and 7-way to what you referenced that uses the same round connector to install to the vehicle we have the Hopkins harness part # 30955 which has a lid design that allows you to access both at the same time.
    view full answer...
  • No Power To Factory 7-Way Plug After Loading Boat Into Water
    The first thing you want to do is unplug the factory 7-way plug from the factory tow package port. Take a circuit tester and check the circuits of the factory wiring port for power. If you have power on the circuits and not the 7-way plug then the plug needs to be replaced. You can also make sure the 7-way plug is fully seated with the factory wiring for a good connection. You also want to make sure the 7-way plug is properly grounded to a clean bare metal surface if it has a separate ground...
    view full answer...
  • Recommended Wiring Harness for 2002 Chevy Silverado
    For your 2002 Chevy Silverado with tow package, I recommend the Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors # 30955. This will give you both the 7-way and 4-way connections and will easily connect to your factory wiring harness and give you connection for both styles of trailer wiring.
    view full answer...
  • What are the Wire Functions on Hopkins Replacement Multi-Tow 7-Way and 4-Way Trailer Connectors
    The wire colors on the Hopkins replacement 7/4-Way trailer connector # 30955 are as follows: White is ground Black is 12 volt power Green is right turn/brake lights Yellow is left turn/brake lights Blue is output from a brake controller to trailer brakes Purple is reverse lights Brown is running lights
    view full answer...
  • Wiring Harness to a 2013 GMC Sierra Trailer Connector is Locked On
    I have included a link to a video that should help you. The wiring harness is connected to the trailer connector on your 2013 GMC Sierra with a white or gray lock. The easiest way to remove it is to use a very small flathead screwdriver and push/pry the lock out of position so you can then pull it out. Then there is likely to be a spot on the connector housing that you will need to push in while pulling out the harness at the same time.
    view full answer...
  • Availability of 7-Way/4-Way Combo To Replace 7-Way of Truck
    Yes, we have exactly what you are looking for with the Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors # 30955. This will install in place of the 7-way you have now and would give you both the 7-way and 4-way you are looking for. I have this installed on my Tahoe and it works really well and has held up great over the years.
    view full answer...
  • No Power To Lights On Trailer
    If you are not getting power to any of the trailer lights then your issue is most likely with the trailer plug. The first thing you will want to do is remove the ground, sand down the surface, and attach with new hardware. If this does not fix your problem then you will want to make sure the wires are secured leading into the plug and that there is no corrosion inside the pins. If still no power then begin tracing the wires back to each light while checking for breaks. If no breaks are...
    view full answer...
  • Adding 4-Way or 7-Way to 2002 GMC Sierra 2500HD Without Factory Tow Package
    Though you may not have the factory tow package, almost all GM pickup trucks like your 2002 Sierra 2500HD came with the factory trailer wiring. You mentioned you have an existing trailer plug, which you can use to install the Multi-Tow 7-Way and 4-Way Trailer Connectors # 30955, which will plug into the OEM connector above the spare tire. I've added a couple links to video reviews for you to check out as well.
    view full answer...
    Image 1 for
  • Dimensions Of Mounting Bracket and 7-Way and 4-Way Trailer Connector # 30955
    The mounting bracket for the Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors # 30955 is 2-3/4" wide, 3-11/16" tall and 1-3/8" deep. The Connector itself is 3-1/8" wide and 3-1/16" tall.
    view full answer...
    Image 1 for Image 2 for
  • 7-Way Trailer Connector Recommendation for a 2006 Chevy Silverado
    Yes, the Hopkins 7-way part # 30955 that you referenced would fit and work well as a 7-way trailer connector on your 2006 Chevy Silverado. This will give you a 7-way and a 4-way trailer connector. I attached an install video for this product that shows it being installed on a 2006 Chevy Silverado for you to check out as well.
    view full answer...
  • Replacement 7-Way and 4-Way for 2003 GMC Sierra With Factory Tow Package
    So it sounds like you spliced into the factory trailer wiring harness of your 2003 GMC Sierra's factory 7-way, or factory tow package harness. Doing that would cause the issues you are having so what you need to do is replace the harness with the Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors # 30955. This will work without anything else so long as you didn't try and splice into the wiring AFTER the truck's factory plug. If you spliced the wires after the plug you will...
    view full answer...
    Image 1 for Image 2 for
  • Troubleshooting Trailer that Illuminates Trailer and Vehicle Running Lights When Connected
    There must be a short on the wiring of the trailer you are towing or on the tow vehicle. Sounds like it has to do with the running lights and the 12 volt power circuit. Since it only happens when the trailer is connected I would expect it to be on the trailer side of the situation. Check out the 7-way wiring diagram I attached and compare that to how the 7-way of the trailer is wired. You would also need to look for obvious signs of a short like cut or exposed wiring or corrosion. If...
    view full answer...
    Image 1 for
  • Brake Controller Installation on a 2007 Chevrolet Silverado
    If you have a 2007 Silverado with the Classic Body style, as long as the connector port is there underneath the dash and you have a factory 7-Way connector port at the rear, all the wiring is in place and you would be ready to use your brake controller. If your truck does not have a factory 7-Way, you would need part # 30955. It is a 7-Way harness that is plug and play. We have this part used in one of our installation videos so I will provide a link to that video as well.
    view full answer...
  • Recommended Trailer Wiring Connector For 2005 Chevy Silverado 1500
    For your 2005 Chevy Silverado, I recommend the Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors # 30955. This will give you a 7-way as well as a 4-way trailer connection. It is easy to install and has a bracket included to mount the connector to. It is a confirmed fit for your truck. I've attached a video to assist.
    view full answer...
  • No Trailer Turn Signals On a 2005 Ford F-250
    I know you said you checked the fuses but there are a few different fuse boxes on your 2005 Ford F-250. The fuse box you are looking for is called the power distribution center and this is located next to the engine under the hood of your truck. In this fuse box the one you will be looking for is a 20 amp and is located in cavity #9. There are also two relays you need to check as well, cavity #201 and cavity #202. If all fuses and relays check out and you have inspected all the visible...
    view full answer...
  • Wiring Harness for a 2003 Ford F-250
    You would need part # 30955. Please let me know if there is anything else with which I can assist you.
    view full answer...
  • Where is the wiring harness on my 2009 Chevy Silverado
    The wiring harness for the trailer connection is located above the spare tire and you can use the 30955 Replacement Multi-Tow 7-Way and 4-Way Trailer Connector for your trailer lighting. Below I have posted a video for you that shows where the connection is made.
    view full answer...
  • Trailer Lights Not Working when Connected to 2008 Chevy Express 2500 w/Factory Tow Package
    First we should make sure we have checked all of the fuses and relays related to the factory tow package wiring on your 2008 Chevy Express van. Under the hood there are the following fuses related to the tow package wiring: Location 8 = right stop lamp, trailer turn signal Location 16 = left stop lamp, trailer turn signal Location 35 = Trailer wiring (this is a very ambiguous description and just might be the culprit) Location 62 = Trailer wiring (see above) Oddly enough there isn't...
    view full answer...

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