bing tracking image
  1. Trailer Wiring
  2. Hopkins
  3. Trailer Connectors
  4. Trailer End Connector
  5. 7 Round - Blade
  6. Plug and Lead
Hopkins 7-Way RV Style Connector with Molded Cable - Trailer End - 8' Long - RV Standard

Hopkins 7-Way RV Style Connector with Molded Cable - Trailer End - 8' Long - RV Standard

Item # H20046
Our Price: $46.90
You Save: 10%
Trailer Wiring
Shipping Weight: 2 lbs
Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Need help with installation?
Locate installers near me
Replace your damaged 7-way, RV-style, trailer-end connector with this molded cable. Durable cable covering resists damage. Wiring codes are RV standard. Great Prices for the best trailer wiring from Hopkins. Hopkins 7-Way RV Style Connector with Molded Cable - Trailer End - 8' Long - RV Standard part number H20046 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (798)
  • Q & A (0)
  • Photos

Hopkins Trailer Wiring - H20046

  • Trailer Connectors
  • Trailer End Connector
  • 7 Round - Blade
  • Plug and Lead
  • 6 - 10 Feet Long
  • Hopkins

Replace your damaged 7-way, RV-style, trailer-end connector with this molded cable. Durable cable covering resists damage. Wiring codes are RV standard.


  • Pre-wired, 7-way, blade-style, trailer-end connector allows you to connect your trailer to your vehicle
  • Easy-to-grip tabs allow for simple plug in and disconnect
  • Flexible cable allows for easy positioning
  • Molded cable sleeving protects wires
    • Durable covering is insulated and corrosion resistant
  • Simple installation
    • Hardwire to existing trailer wiring
  • Meets SAE standards


  • Cable length: 8'
  • Wire gauges:
    • 14 Gauge - Red, brown, green, and yellow
    • 12 Gauge - Blue
    • 10 Gauge - White and black
  • 90-Day limited warranty

Wiring Code
Molded Connector Function Usual Trailer Wire
White Wire Ground White Wire
Red Wire Left Turn and Brake Yellow Wire
Brown Wire Right Turn and Brake Green Wire
Green Wire Tail Lights Brown Wire
Blue Wire Brake Power Blue Wire
Black Wire Aux. Black Wire
Yellow Wire Reverse Lights Purple Wire

20047 Hopkins 7-Way Molded Trailer Wire Connector, 8' Long

Replaces 20246

Installation Details H20046 Installation instructions

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Hopkins 7-Way RV Style Connector with Molded Cable - Trailer End - 8' Long - RV Standard - H20046

Average Customer Rating:  4.8 out of 5 stars   (798 Customer Reviews)

Replace your damaged 7-way, RV-style, trailer-end connector with this molded cable. Durable cable covering resists damage. Wiring codes are RV standard.


7 pin connector separated from cable.
was expecting that "Molded Cable" meant that the connector was fused to the cable insulation but instead, the two separated almost immediately after I installed it. It still works fine as the wires are connected securely inside the connector but with the outer covering pulled out like this, I don't think it will last very long.


Quality plug connector, works well and I'm sure will last a long time.



Still working well, no issues, seems to be very high quality.


I installed this Hopkins connector cable on my 2003 Jayco 12 Sd popup camper because I replaced hydraulic brakes on it with the electric brakes. Needed some extra wires. Four were not enough to operate the lights and electric brakes. Installation was quick. I had to match wires on the trailer with cable wires. Cable looks great and so far it works great. We just checked out on our first camping trip this year.


I bought a used trailer and it needed the cable replaced. The new cable is working great


Well built and plenty of length for wiring to my junction box.


It was just like the one that I was replacing. I cut a corner to sharp while turning and pinched the cable that came with my Keystone RV. Like for like.


These folks are Top Notch, they kept me updated on my part, and followed up after delivery. Not to forget, my trailer side wiring harness, is solid and I fully expect no issues when I install it. Thank you!!


This has been a great replacement harness and was easy to install.


exact replacement made the repair easy.


My wire harness was easy to install, looked great and performed great. One year later and it still looks and performs great! I definitely recommend to anyone building their own trailer or are looking to upgrade to better wiring! My homemade trailer was a great success, thanks to!


Worked perfectly. I like the extra length compared to the original cable.

by: 11/30/2023

Part enabled installation to be complet ed.


only negative is nothing to say what wire goes to what function. basically no diagram sheet but that is easily found Info



wiring harness was a great addition to my atv trailer. replaced that dinky 4 way and I dont have to worry about an adapter. its held well since install


I am replacing the trailer connection wiring harness as part of the brake system. My 5th wheel trailer is now 10 years old so this is a preventive maintenance step in the process. Hopefully with new wheel/brake parts my trailer brakes will work better.
Thanks and Rebecca for great support.


Had some real issues with this one. Should have noticed when purchasing this harness is not wired using standard truck/trailer color format. Other than that it went together fairly nice. If the connector would come apart I was thinking of fixing the wiring my self.


I had to get a longer pigtail for my fifth wheel since the stock one kept pulling the plug and breaking the flap on hard left turns. This pigtail solved the issue and has worked flawlessly on my Ram 3500 since installation.

P.S. E-Trailer saved my bacon when I broke two of four leaf springs on a trip from WA state to TX last winter. I hobbled into a nice RV park in El Paso TX and proceeded to call e-trailer. The gal on the other end made sure I had the right springs and hardware to replace all four leaf springs (overnighted $$$) and did her best to get them to me as fast as possible. They did not have the exact replacements so I opted for the spring that had the extra leaf, which probably should have been the correct one to begin with. I went to the local hardware store to get a few tools I didn't have on my truck (puller, torque wrench and plastic hammer) so I could finish the job. I replaced all four leafs in the RV park and was back on the road in three days from the time they broke. The replacement springs are far better and smoother than the original ones and lifted the fifth wheel about a half inch, which made it completely level. I'm totally happy with E-trailer and would HIGHLY recommend that they be the first call when you need anything for your travel needs. She also called me back several times to make sure I was doing OK...where do you get that service these days? Jim S.


Pros: Best wire gauge in a 7 pin connector I could find.

Cons: reverse lights (red), left turn (yellow), right turn (green), and running light (brown) and not wired correctly in the plug for their respective wire colors.

I bought this for a sealed plug with good gauge wire to help save some time. What I got was a total headache trying to find out the problem of why it was not working correctly. This might not have been so bad had it not been on a new to me truck that I was not so trusting of the wiring in it. So I wound up looking at the truck first not thinking the plug would be wired incorrectly.

Be warned.


Well made 7 way plug with cable.


Thanks for your help with parts for my trailer build. My wife and I are still making custom cabinets out of curly maple. We hope to finish this winter. We have taken it out 7 times this season. Thanks again.


Part of brake wiring assembly. I followed etrailer's wiring diagram.


Awesome product


Great quality on this overmolded harness. Various/appropriate AWG wires for each pin. Looks like it w/last a long time.

Woods B.


This appears to be a quality product since I have had no issues


Good product


Easy to install. Heavy duty and long la sting.


Well insulated and was easily able to splice this cable into my existing system to replace the one that was damaged.

Show More Reviews

See what our Experts say about this Hopkins Trailer Wiring

  • What are Two Standard 7-Way Wiring Color Diagrams
    For trailer 7-ways there are two wiring color standards that are commonly seen. I attached a picture that shows the difference. Typically red and black are not interchanged though. Sometimes red and yellow are for left turn/stop signal. That said not all people will use standard trailer wiring colors so you might have non standard colors used.
    view full answer...
    Image 1 for
  • What is the Function of the Yellow/Brown Wire on a Trailer
    Your yellow/brown wire most likely ties into the brown running light wire. Typically, when a trailer has a green/brown wire and a yellow/brown wire, they are both used for the running light circuit. The green/brown wire is ran down the right side of the trailer and the yellow/brown wire is ran down the left side of the trailer for the tail lights and marker lights. This prevents the need from running jumper wires across the trailer for the running lights. If your trailer is setup this way,...
    view full answer...
  • Identifying Trailer Wire Colors and Troubleshooting Trailer Wiring Not Functioning
    I can help you identify the wire functions of the kit you have. The yellow wire is left turn/stop, the green is right turn/stop, the yellow and brown is left side running light circuit and the brown and green is right side running light circuit. You didn't mention a white wire though which is a very important circuit. That is the ground circuit and without it being connected to a clean metal surface on the trailer frame none of the circuits will function.
    view full answer...
  • Trouble Shooting a Malfunctioning Wiring Harness on a 2017 Ram 2500
    I recommend you check to see if your harness is grounded correctly and all fuses are good on your 2017 Ram 2500. You should also test the running lights pin on the truck side 7-Way connector while the lights are turned on in your Ram 2500.
    view full answer...
  • How To Wire In a 7-way to Replace a Boat Trailer 5-Way Flat
    You definitely could install the 7-Way Molded Trailer Wire Connector # H20046 in place of the 5-way that is installed on your trailer currently. The colors wouldn't match up exactly. White would go to white, you would run both brown wires to the single green wire of the 7-way. Yellow of your trailer would go to the red wire of the 7-way, and green of the trailer wiring would go to brown of the 7-way. Now without knowing where the red wires of the 5-way go it's hard to say for certain....
    view full answer...
    Image 1 for Image 2 for
  • Mounting Two Trailer Stop, Turn and Marker Lights on Each Side of a Trailer
    If you are using two stop/turn/marker lights on each side of the trailer, the only signal you will be able to separate out is the taillight signal. Trailers in the United States use a combined stop and turn signal so you would not be able to separate them to wire one light turn and marker and the other light brake and marker or brake turn and marker. You would essentially have two options. One light on each side stop/turn/tail and the other taillight only, or one light stop/turn only and...
    view full answer...
  • How to Test the Functions of Trailer Tail Light Circuits
    The easiest way to test the functions of the taillight wiring on a trailer is to use a jumper wire. You will touch one end of the jumper wire to the positive post of a 12 volt vehicle battery and then touch the other end of the wire to all of the different wires to see what circuits illuminate. The other option would be to trace the wires back to see where they terminate.
    view full answer...
  • Troubleshooting Running Lights Not Working on New 5th Wheel Trailer With Headlights On
    When the headlights being switched on cause other lighting functions to quit working we have found this to either be the result of a bad ground or too many lights on the trailer. Since it sounds like you have had a normal towing experience until recently it is probably a bad ground. Start off by verifying that both your tow vehicle and 5th wheel trailer connectors are clean and free of any corrosion or debris. Once those are clean we can move on to finding the issue with the ground but...
    view full answer...
  • Will Trailer Lighting Circuit Still Work with 7-Way if Brake Controller isn't Used
    Yes, the lighting functions of a trailer 7-way will be fully functional regardless of if a brake controller is installed/functional. The circuits are totally separate. There are many people who use 7-way trailer wiring setups without a brake controller and lighting all works fine.
    view full answer...
  • Where Does Yellow Wire of Trailer Wiring Connect to on 7-Way Wiring
    I attached a picture for you to use as a guide for wiring in your trailer's 4-way wiring to a 7-way socket connector. The yellow wire is the left turn/stop circuit that you have out of the connector.
    view full answer...
    Image 1 for Image 2 for
  • Help Determining Wire Colors of Trailer Wiring for Installing New 7-Way
    Most likely some of the colors of the wires in your picture would match up to the # H20046 your best option would be to take a jumper wire from a 12 volt vehicle battery and put voltage on each wire to determine it's function and then wire accordingly. I attached a chart that has the wire color functions listed for this connector for you to check out as well.
    view full answer...
    Image 1 for Image 2 for
  • Wiring a 7-Way to a Trailer with a 6-Way that Uses Non Standard Colors
    Unfortunately not all trailer manufacturers will use a standard wiring color code but we still can help you determine what to do with the wires of your trailer. First we need to identify what all of the functions of your wires are. To do this you'll need to use a jumper wire from a vehicle battery to all of the wires to watch what circuit illuminates on the trailer and then wire them to the new 7-way using the diagram I attached. The brake circuit won't illuminate anything but you should...
    view full answer...
    Image 1 for
  • Could Additional 7-Way be Ran to Rear of Travel Trailer by Wiring it to Junction Box
    Sounds like you are wanting to run an additional 7-way to the rear of your trailer by having a 7-way with lead like part # H20046 also wired to the junction box. This technically would work fine. This harness is 8 feet long.
    view full answer...
  • What is the outer Diameter of the Cable on 7-Way Molded Trailer Wire Connector, # H20046
    I went out to the warehouse and grabbed a 7-Way Molded Trailer Wire Connector # H20046 to measure it for you. I used a set of digital calipers to get an accurate measurement. The diameter of the outer black sheath is 0.59 inches or 19/32 of an inch. A hole 5/8 of an inch would be perfect for this size cable. I have included a link to a video review of this connector for you.
    view full answer...
  • What is the Reverse Light Wire on the Hopkins Molded Trailer Wire Connector # H20046
    If you will be using the Hopkins Molded Trailer Wire Connector, # H20046, then the yellow wire will attach to the wire from your reverse lockout solenoid. The yellow wire is attached to the center pin on the connector and the center pin in the trailer connector on your tow vehicle is for the reverse lights. Once the vehicle is shifted into reverse, the solenoid will close. I have attached a table that shows all of the wire functions for this molded trailer connector.
    view full answer...
    Image 1 for
  • What Circuit Does Purple Wire of 7-Way Usually Carry
    On the 7-way wiring plug and lead part # H20046 there isn't a purple wire. Normally a purple wire for a 7-way is for a reverse light circuit. Which would correspond to the yellow wire of this adapter.
    view full answer...
    Image 1 for
  • Hopkins 7-Way Trailer Connector to Older Featherlite Wiring Recommendation
    The diagram you attached shows a 7-way wired up in what is considered the "traditional way." If you check out the chart I attached you will see the three ways (really only 2), that a 7-way can be wired. The Featherlite is wired up like the diagram on the left. Now to wire up the # H20046 all you would need to do is wire up the connector by FUNCTION and not color. If your trailer has the same wire colors as the diagram you attached the blue wires would match up, the brown of the trailer...
    view full answer...
    Image 1 for Image 2 for
  • Diagram to Use for Wiring 4-Way to 7-Way
    Your 4-way colors are standard so the white is ground, yellow is left turn/stop, green is right turn/stop, and the two brown wires are for the running lights. Since running lights are on both sides of the trailer they gave you two wires for each side. You can run the wires together and run them to the running light pin of a 7-way which is the 11:00 pin. I attached a diagram for a 7-way for you to use as well.
    view full answer...
    Image 1 for
  • What Gauge Wire Should be Used to Wire Trailer Brakes
    That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary. On a smaller trailer with a single axle of brakes 12 gauge wire would probably be enough. But for a longer tandem axle trailer I would recommend you run 10 gauge wire to all the assemblies just to minimize the amount of resistance that would be on...
    view full answer...
  • How to Ground Trailer Brakes on an Aluminum Trailer
    On an aluminum trailer I would recommend you ground the brakes by running the ground wire back up to the ground circuit of the connector on the trailer. Aluminum frames do not make the best ground points so I wouldn't ground the assemblies to the frame. You would most likely have pretty weak braking performance if you did. I attached an FAQ on wiring that you might find helpful also.
    view full answer...
  • Brake Lights On Trailer Do Not Work with Tail Lights On
    I have attached the functions of the Hopkins 7-Way RV Style Connector with Molded Cable part # H20046 for you below however, if you are having issues with certain lights not working while others are turned on then I can almost guarantee you have a ground problem. In order to fix this I recommend you run the ground for each light up to the main ground for the trailer connector. If you have already done this then remove the ground, sand down the surface, and then reattach with new hardware....
    view full answer...
  • Does 7-Way Molded Trailer Wire Connector Have a Reverse Light Function
    Yes, the center pin on trailer side wiring harness # H20046 is for reverse lights on the trailer. For this particular harness it is the yellow wire. But it will only work if the center pin is functional on your 2012 Toyota Tacoma. If you have the factory installed 7-Way on the Tacoma then it should be active.
    view full answer...
  • Troubleshooting Trailer Lighting that Stops Functioning When Headlights are On
    Your main problem is an insufficient ground for the trailer wiring. Try improving the connection of the main ground wire of the trailer wiring harness. Make sure it is attached to a clean metal surface. Or you can run all of the trailer wires back to the main ground. This is actually the ideal solution. But you can also check the current grounds for the lights to make sure they are making a solid connection to a clean metal surface. When the vehicle headlights and trailer running lights...
    view full answer...
    Image 1 for
  • How to Wire Trailer Light to Trailer with Unknown Trailer Wiring Color Functions
    The colors your trailer has are not standard colors so your best option would be to use a jumper wire from a 12 volt battery to each of the wires to determine their function and then wire by function.
    view full answer...

< Previous
123. . .21

Do you have a question about this Trailer Wiring?

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Robert G
Expert Research:
Robert G
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Brandon M
Expert Research:
Brandon M
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Zack K
Video Edited:
Zack K
Employee Joshua S
Video Edited:
Joshua S
Employee Jeff D
Installed by:
Jeff D
Employee Shane T
Installed by:
Shane T
Employee Ryan G
Installed by:
Ryan G
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

Product Experts Available Now!
Call 1-800-940-8924