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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
You Save: 10%
Trailer Wiring
Shipping Weight: 2 lbs
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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 1-800-940-8924 for expert service.
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  • Reviews (793)
  • Q & A (0)
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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   (793 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.


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.


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


exact replacement made the repair easy.


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!!


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
Jon - 07/17/2023


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.


Well made 7 way plug with cable.


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!


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

This appears to be a quality product since I have had no issues
Woods b - 11/24/2022


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.


Easy to install. Heavy duty and long la sting.


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.


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.


This is a good piece of equipment and should work very well.


easy as falling off a log, except now i found a few wires to the lights that are in need of replacements

still works great it does not lead a pampered life, it gets dragged, etc and still goes
Robert - 12/16/2022


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


great pigtail assembly


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.


We had to clen the black putty off of it. But the item was in great shape


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


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

Show More Reviews

See what our Experts say about this Hopkins Trailer Wiring

  • 7-Way Plug and Lead that Uses Traditional Wiring Color Scheme
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  • Wiring Trailer Using Wishbone Wiring Harness
    You're almost there! What you're describing is known as a wishbone harness. The running lamp circuit is split with one leg running down the driver side, the other running down the passenger. You'd join these two wires to the brown running light wire from the trailer connector. The brown/yellow is ran down the driver side and the brown/green is run down the drivers side, so it sounds like you have that backwards. The white ground wire from the trailer connector will need to be grounded...
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  • Wiring Up Trailer 7-Way that Uses Non-Standard Wiring Colors
    Unfortunately not all people will use the standard wiring colors when wiring up a trailer connector. This happens pretty frequently and the solution is to first determine what the wiring is and then wire by function according to the attached diagram. So to do this on a trailer you have to take a jumper wire from a 12 volt battery positive post and apply voltage to all of the pins to see what they activate. You might graze the pins first as the ground circuit will spark. Most likely this...
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  • 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...
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  • How to Wire a Hopkins 7-Way Trailer Connector # H20046 1987 Layton RV Trailer
    There are standard colors for trailer wiring, but not everyone will follow those guidelines and since your trailer is older it is likely that the colors are different. The best way to wire up your trailer with this 7-Way Molded Trailer Wire Connector # H20046 would be to test all the functions of the wiring on your trailer and then wire the # H20046 to it by function. I attached a review video for this product and an FAQ on trailer wiring for you to check out. I also attached a picture...
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  • 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...
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  • 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.
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  • 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.
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  • How is Length of 7-Way Connector Lead Determined for Wiring Up Trailer
    The method you described would be a great way to determine what length to cut the # H20046. That way you would end up with enough wire that it wouldn't come unplugged when making a tight turn. Securing the wire up and out of the way is a smart option as well so that the weight of the cable would not want to pull it out of the connector and so that it doesn't get caught on anything.
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  • Troubleshooting Trailer Brake Lights That Illuminate when 7-Way is Plugged In
    You have trailer wiring circuits that are shorting out on either your truck or trailer to the stop turn circuits. Most likely it is the 12 volt power circuit shorting to the brake/turn circuits. You will want to check out the wiring on both your truck and trailer looking for any exposed wire that could be causing the short and fix as necessary. I attached a couple help articles on trailer wiring for you to check out as well.
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  • Trailer Running Lights Only Work when Interior Lights are Turned On
    If the white wire is the ground then what you might be experiencing is a short to ground. But the main issue here is that the interior lights need to be wired from the switch to the battery independently of any of the exterior lights. After you have isolated the interior light wiring from the external light wiring the problems may heal or it could reveal additional wiring problems. Be sure that all of the lights are grounded to clean and corrosion free bare metal surfaces. Try to inspect...
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  • Wire Function by Color on the Hopkins 7-way Trailer Connector
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  • 7-Way Trailer Connector Sparked When It Touched Bare Bolt Of Trailer
    The 12V power connection on the plug does go directly to your trailer battery positive terminal. So it completed the circuit when it touched the grounded bolt on your trailer. This is not uncommon, so I suggest you just be a little more careful when putting the plug away. Your trailer wiring is working as it should. The trailer wiring is run from your vehicle, but that trailer battery will still give you that charge when the circuit is completed.
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  • Troubleshooting 7-Way Wiring Harness Lighting Issues
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  • Does 12 Volt Wire on Trailer Side 7-Way have to Be Connected if Trailer Does Not Need 12 Volt Power
    On a 7-Way trailer connector such as # H20046 the 12 volt wire would connect to any accessory that would need 12 volt power such as a trailer mounted battery or a jack in some cases. You usually do not see them on boat trailers. If you don't have anything on the trailer that needs 12 volt power you can just cap off that wire and stow it out of the way.
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  • 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.
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  • 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,...
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  • 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...
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  • Should 12 Volt Power from a Trailer Battery to Interior Lights be Circuit Protected
    Having a fuse or circuit breaker in line to the interior light wiring or any 12 volt accessory is not going to hurt anything and would add extra protection to other electrical items on the trailer and vehicle. You will just want to avoid using a fuse or circuit breaker that is rated way higher than what the accessory actually draws. For example if the interior lights draw 10 amps you would not use a 20 amp fuse because in a short circuit situation the fuse would not blow to protect the...
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  • 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.
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  • 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...
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