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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
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Trailer Wiring
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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 1-800-496-5010 for expert service.
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  • Reviews (748)
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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   (748 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.


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.


The installation was easy and so far after a year of use and outdoor storage, the wire and connector are holding up great. Installed on a 2018 Rockwood 2906WS camper trailer.

Very happy with the product quality. Very pleased with etrailer.


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.


There ia a color code standard for trailer wiring.
This product does not follow that standard! Ohm out your wiring or use a simple test light to determine what color wire is giving you which light/power/brake voltage. Very sad


Been very happy with the 90 degree wiring harness over the past year. It saved running the 7 pin connector over the tailgate. Replacing the 7 pin connector with new Junction box helped in cleaning up the mess in the old box. The new 7 pin wiring harness is lighter & more flexible. All 3 products are still working well and have saved me time & functionality.


Etrailer has Great Products for REpairing or building trailers!


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


Another quality product that is as desc ribed


Bulletproof. I will order this again for future projects.


Nice heavy duty. The cable jacket does shrink back from the plug a bit over time. I wish they were available with the other 7-way color scheme.


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


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!


Just what I needed as a replacement cord


Order took a long time to arrive but was exactly what we ordered when it did get here. I understand the challenge is a shortage of labor at the distribution center.


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.


Needed a new pigtail due to a short in my cable from wear. Spliced it in with the 7pin junction box and back on the road.


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.


Very good product. Easy to install. Would recommend to anyone.


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 was a little worried about this 7 wire cable because the price was quite a bit lower that the other products. But I was totally wrong about it. This is a very high quality and heavy duty product.I will buy another one for my Dad's cargo trailer.


Exact replacement for my 2018 Keystone Springdale. Good purchase- I carry a spare, seems like these cords only get damaged after dark!


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.


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


Perfect fitment.

Show More Reviews

See what our Experts say about this Hopkins Trailer Wiring

  • 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 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...
  • Wire Colors and Functions of Hopkins 7-Way Molded Trailer Wire Connector
    There are two color code standards that are used in the trailer world. The Hopkins 7-Way RV style connector and cable, # H20046, that you referenced uses the RV Industry standard color code which is as follows: White Wire - Ground Red Wire - Left Turn/Brake Brown Wire - Right Turn/Brake Green Wire - Tail Lights Blue Wire - Brake Controller Output Black Wire - 12 Volt hot lead Yellow Wire - Reverse Lights or Auxiliary Circuit This color code is commonly found on camping trailers such as...
    view full answer...
  • Gooseneck Trailer Lights Get Brighter on One Side and Marker Lights Come on with Brake Lights
    Checking the grounds was a good place to start. I think that it still may be a ground issue. There are several things you can check to determine if it is a ground problem. I would start with the trailer side connector and check for any dirt or corrosion and clean it out. Dirt and corrosion could cause a bad connection or a short which would lead to undesired results. Next, I would check the ground coming out of the back of the trailer connector. It should be connected to a clean and corrosion-free...
    view full answer...
  • Are All 7 Way Blade Connectors the Same
    Yes, there is only one type of 7-way blade connector. I am attaching a help article about wiring that may be of interest to you.
    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...
  • 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 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...
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  • Which Replacement Hub/Drums and Brake Assemblies Needed for 1985 Monarch Horse Trailer
    As a first step, you'd want to determine the reference numbers from the inner and outer wheel bearings and the wheel bolt pattern used by your current hub/drums. If the reference numbers aren't readable, you'd need to use a digital caliper on the surfaces of the spindle where the inner and outer bearing and the grease seal ride. With this information, I can recommend a replacement drum. To recommend replacement brake assemblies, I'd need to know the inside diameter and depth of your brake drums.
    view full answer...
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  • How to Protect Trailer End Connector From the Weather
    I looked through our product offerings and was honestly surprised when I saw we didn't offer a cover for a trailer connector. Since the tape didn't work for you, have you considered using some of that Press'n Seal plastic wrap? You could use a piece to cover the connector, and secure the wrap with the duct tape. That way, any tape residue would remain on the wrap and not the connector itself.
    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...
  • 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 to Determine Unknown Wire Color Functions of Trailer Wiring
    Orange and gray are not standard trailer wiring colors so you'll need to do some testing to verify what those circuits carry. What you'll need to do is use a jumper wire from the positive pin of a 12 volt car battery to apply voltage to all of the wires to see which trailer circuits apply. The one that sparks when the connection is touched is the ground. For a new 7-way though we have the # H20046 which I attached a chart that shows how this gets wired as well by color.
    view full answer...
    Image 1 for
  • How to Identify Ground Circuit of 7-Way Trailer Wiring That Uses Non-Standard Colors
    If you check out the diagram I attached for a trailer 7-way you'll see that the pin in the 7:00 position should be the ground. Since your wiring uses non-standard colors this would be the easiest way to identify it.
    view full answer...
    Image 1 for
  • 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
  • Are 7-Way Trailer Harnesses Installed without Being Fully Functional
    I wouldn't say that's standard practice. There are many times though that people will install a 7-way and will only activate the circuits that are needed and leave off ones that aren't. If the trailer doesn't have brakes they'll leave that circuit open or if there's no need for a 12 volt accessory or reverse light circuit. If your trailer has brakes and they knew you wanted to install a 7-way to activate them I'd say they aren't being totally honest if they only wired up the lights.
    view full answer...
    Image 1 for Image 2 for
  • 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
  • 7-Way Recommendation for 1990 StarCraft Star Flyer
    For a new 7-way plug the part # H20046 is an 8 foot long plug that would work well. This is a 7-way RV style plug. I attached an install video for this plug for you to check out.
    view full answer...
  • Troubleshooting 5th Wheel Right Turn Signal Working Without Being Hooked up to Tow Vehicle
    If your right turn circuit is showing power when your 5th wheel isn't connected to your tow vehicle it sounds like you have some circuits that are crossing over. Try disconnecting whatever power source you have on your 5th wheel whether it is being connected to the campsite power or a battery on your trailer and you should see the power disappear. If this is the case then you need to inspect the wiring for your right turn signal and look for where it may be receiving power. This would...
    view full answer...
  • Replacing Damaged 7-Way on Horse Trailer
    There's more than one accepted way to wire a 7-way, but the most common uses the green wire for right turn/brake, yellow wire for left turn/brake, brown for running lamps, blue for brake output black for 12-volt accessory power to the trailer, white for ground and purple for the reverse light circuit. Because wire colors can vary so greatly, we typically tell folks to wire by function, not by color. An alternative color code is yellow wire for auxiliary or reverse lights, green for running...
    view full answer...
    Image 1 for
  • How to Wire in a 7-way On a Trailer that has a 5-Way
    I attached a chart that details how the # H20046 would wire to your trailer's wiring. You will notice that the wire color column on the far right says "usual," this means the color codes are always specific. On your 5-way the jacketed circuit will be the ground circuit, the circuit next to that should be the running lights circuit, next to that should be the left turn/stop circuit, next to that the right turn/stop circuit, and finally the reverse light circuit, or sometimes brake output. The...
    view full answer...
    Image 1 for
  • 7-Way Diagram for 7-Way of 2014 Mercedes Sprinter 3500
    The PA66-MD40 is a standard 7-way which we have diagrams for. I attached a picture that shows how a standard RV 7-way gets wired up for you to check out.
    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
  • 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...

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