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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

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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. Lowest Prices for the best 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 etrailer.com or call 800-298-8924 for expert service.
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Hopkins Wiring

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

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


Features:

  • 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


Specs:

  • 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 12 volt (hot lead) Black Wire
Yellow Wire Aux. -



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

Replaces 20246

Item # H20046

Installation Details H20046 Installation instructions


California residents: click here


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

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




Video Transcript for Spectro Trailer Wiring Junction Box Installation

Today were going to install part number 38656. This is a trailer wiring junction box. First thing were going to do is find the location for our junction box. Were going to go ahead and install on the inside edge of the tongue. Well go ahead and hold it up to the tongue and then well go ahead and use a drill to mark it for our holes. We have our holes marked, well go ahead and remove the box, and then go ahead and drill out our hole.

Now well go ahead install our hardware and install our box. Now were going to use a quarter inch hardware to install the box to the frame. This hardware does not come with the box. With our box installed, we can go ahead and start getting our wiring ready. Well go ahead and cut our wires to the length of what we need and then well take our excessive length from our gray cable and use the white wire for our ground lead.

Were going to take the white wire, well add a couple of ring terminals, and well go ahead and connect it to the post labeled white and ground. Well also change out one of solid grommets for a hollow ground. With our new grommet installed, well go ahead and fish our wire through, and attach it to the box, and then were going to use a self-tapping screw to attach it to the frame. Now well go ahead and get the rest of our break cable ready, the gray cable will be for our electric brakes. Well cut back the gray sheath to expose our two wires.

Our white wire will go to ground, our black wire well go ahead and post to label blue, blue is only the function for brakes. Well go ahead add some ring terminals to it, then temporally put them into position. Now well go ahead and hook up our wires for our trailer lighting, well also go ahead and run it through the grommet and then go ahead and install our ring terminals. Now the brown wire on our trailer will be even running light circuit that will go to the post labeled brown, it will also say taillights on there. The green wire will be our right turn signal, well go ahead and connect that wire to a post labeled green, and it will say right turn.

The yellow wire well be our left turn signal and that will be connected to post labeled yellow and left turn. Now these wires have been loosely installed. Next well go ahead and wire our trailer connector, this is going to be a seven molded trailer wire connector, eight foot long, part number h20046. You see the seven pole and we have our wires. Once thing to know about this is that the functions do not match the colors better on the trailer. Now on the other side of the box well go ahead and replace them with solid grommets with a hollow grommet and well go ahead and run that over our wire that we can go ahead and push the wire back into the box. Then well go ahead and add our ring terminals to our wires. Now well go ahead and start attaching our wires, well start off with the green wire from the seven-pole which will be our running lights; this will be connected to the post with the brown wire from the trailer lights. The brown wire will be our right turn so that it will be connected to the post with the green wire from the trailer lights. The red wire will be the left turn function on the seven-pole, so well connect that to the post with the yellow wire from the trailer lights. Our blue wire will be our brake control power, so well hook that up to the post labeled blue. Now our yellow wire is usually reserved for reverse light or whatever function youd like. However, this application is not being used, so well just ignore that wire. Our black wire will be our 12 volt power supply, however this trailer is not using it right now, but well keep it to the junction box for our upgrade in the future. Well now go ahead and take our white wire push it to the ground from our towing vehicle that will be transferred to the trailer and well connect that back up to the white post, well get two white wires. With all of the wires in place well go ahead and tighten down the nuts. Next well go ahead and install the clamp from the wires that come in from the trailer side. Looking at the box on the left hand side there is provision for a clamp. Well make sure everything is pushed together properly and wont get pinched, well go ahead and install the cover. Well fasten and replace of these two bolts. Thats what it takes to install our junction box. All right with that it will finish it for our install of part number 38656, a trailer line junction box on this new trailer.


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   (552 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.

- H20046
by:

My order was received in the time i was told, it was just what i ordered and fit perfect installed easy. Thank you Pat and etrailer for the follow up. I will be ordering from you again. 714257



- H20046
by:

Good quality wiring harness, this was a replacement for the same model that was almost twenty years old. Price and shipping charges were reasonable. I plan on doing business with etrailer in the future. 673401



- H20046
by:

The product did what it was designed to do. It is a great product. 584189



- H20046
by:

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 etrailer.com! 562417



- H20046
by:

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. 13049



- H20046
by:

Why not have the colors match? After running my wires neatly to a junction box then haveing lights not work right,I had to match each wire to the correct light,red to yellow,brown to green,green to brown.I come to warn other buyers and see they have the color codes on the site.So if all the trailers have the same colors, Why can't they just make the plug to match. 3503


Comments
I agree! All the right colors, all the wrong places: Makes no sense, and comes with no warnings. At least make all the wires one color, that way I would know its up to me to figure out! No warnings, no label.I am teaching students how to install wiring on a trailer, neatly, professionally, and using the DOT accepted national color codes. The end result was a mess of lights not working and backwards.Everything else ordered from etrailer was perfect. 4 brake and backing plates, seals, junction block, breakaway unit and 50 of cable. ALL standard color codes in everything. This Hopkins cord needs to have a very deliberate label on it, and it needs to say CAUTION: DO NOT FOLLOW STANDARD WIRING PRACTICES
-- comment by: Mike K - 06/18/2015

12606

Thank you for your comment. This is why we recommend wiring by function not by color. We do offer a chart above that shows the color of the wire, function of that wire, and the typical trailer wire that is should be connected to. I have also included a link to one of our helpful articles that show the different trailer wiring plug configurations for your reference.

-- Rachael H - 6/18/2015


- H20046
by:

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. 528698



- H20046
by:

The only reason I had to order myself a second one of these is that I cut the first one too short...after grumbling "measure twice, cut once" to myself about 50 times, I ordered the new one and will do the job right this time. I would also recommend using a junction box to make your connections; this helped me organize the project, and make neater, more secure electrical connections than simply splicing wires. Measure twice! // Kudos to Etrailer.com for getting this to me quickly. 126506


Comments
This molded plug pigtail has held up perfectly, in all kinds of weather, for the year that Ive had it installed on the trailer. Im still glad I wired it through a junction box like the one in Bob Hs review below. The box is a lot easier than managing 14 loose wires.
Hans V - 04/22/2015

11031

Thanks for your follow up and reply. Also happy to hear that Bob H's review and suggestion of using a junction box was helpful to you.

-- Rachael H - 5/11/2015


- H20046
by:

This was such a easy install and fixed all of my TT lighting problems. Love the shipping (2days) and the detailed instructions. 565065



- H20046
by:

This pigtail is an exact replacement for the one on my '04 Jayco. It was a quick job because I already relocated the junction box to inside the pin box a few years ago. What threw me for a loop was the wiring pin-out on the e-trailer site. I don't know if the standard is different on newer trailers but the lighting part of the pin-out (trailer side colors) is completely wrong (or different than my Jayco). As a sanity check I rang out the wires on the new pigtail with it connected to my truck and it turned out this was a color for color swap. It's good to make sure anyway. After the installation I used a jumper to power the circuits through the new pigtail just to make sure it was wired correctly. For the record I used: BLK = +12VDC WHT = Ground RED = Left T&B GRN = Tail BRN = Right T&B BLU = Brakes YEL = Backup Lights 209969



- H20046
by:

Installation on my travel trailer was pretty straight forward. Before I ordered this I did a little research on Hopkins web site, as there are several different products they offer. The differences are the type of pins, flat or round, length of the wires and the wiring colors. There is an SAE standard and an RV standard for wiring colors. This one is the RV standard, and the colors matched mine exactly. I also got the Pollak 10 terminal box to replace the metal house electrical box on the trailer. The terminal strip in the new box is about 6" long, and I left all the wires on the pigtail the same length, so I had to bend them around in the box to get them on the terminals. If I had to do it again, I would cut the wires different lengths reduce the bends I had to make. I went to my local Ace hardware and they had a great selection of crimp connectors. I used the ring terminal connectors for a #8-#10 stud, which fit perfectly. 447592



- H20046
by:

Installed fairly easily, wiring colors matched previous wiring harness (verified before install with multimeter), and worked well. Would buy again! 574360


Comments
Still going strong, just doing its thing. Wire harnessing it up. On the trailer. Passing those electrons from the vehicle back to the trailer. Five star quality marches on.
Will - 10/15/2019

62876

- H20046
by:

product as described. fast delivery 756508



- H20046
by:

quality built , easy to use. 756127



- H20046
by:

Good quality. Nice tight fit on the plug of my 2020 GMC Sierra 1500. 750041



- H20046
by:

Being in business for 45 years it is great to find a company that has the knowledge of the products and excellent service. Great product lines. A+ 749801



- H20046
by:

Great product and timely delivery. Very pleased with the follow up to ensure I got what I needed! 738971



- H20046
by:

Just what I ordered and at a reasonable price. 736774



- H20046
by:

Great product, fast shipping, great customer service! 729571



- H20046
by:

Great prices and fast delivery 729410



- H20046
by:

Haven't installed it yet, but it looks like good quality. I am sure it will be better than the one that got chewed up in the weight distribution system... 726846



- H20046
by:

Good price 720126



- H20046
by:

Made well and the wires are well insulated and it was an easy connect to my trailer. Thanks again etrailer.com! 718240



- H20046
by:

Great products Love ordering from etrailer. Most items are plug and play and match up perfect 714539



- H20046
by:

Still works as it should. No problems at all 715602


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Show More Reviews

Ask the Experts about this Hopkins Wiring

  • Adding 5-Way Harness to 2018 Toyota Highlander With 4-Flat
    I'm a bit confused by your question; the Highlander you are getting has just a 4-pin flat, is that correct? And you are looking to tow a trailer with a 5-flat?
    view full answer...
  • Will 7-Way Connector Charge Auxiliary Trailer Battery
    The yellow wire on the Hopkins 7-Way RV Style Connector with Molded Cable # H20046 will not be able to charge an on-board battery, it should really be used for reverse lights. To charge the auxiliary battery on your trailer the best option is to use a battery charger such as the CTEK MULTI US 3300 12-Volt Universal Battery Charger # CTEK56353 which you would plug into a standard outlet. You can maintain that charge when driving by running # 10-1-1 wire along with 40 amp circuit breaker...
    view full answer...
  • Recommendations For Complete Re-Wiring Of 6 X 12 Enclosed Trailer With LED Lights
    We do have everything you need to re-wire your 6 X 12 enclosed trailer. We also have any of the lights you said you want to use as well. For trailer wiring I recommend installing a 7-way so you can operate the light inside the trailer. The 7-way wiring I recommend is the Hopkins # H20046. This harness is an 8-ft long molded 7-way. I then recommend using a junction box like part # 38656. You would mount this on your trailer and then run your # H20046 wiring into the box. You can...
    view full answer...
  • Wiring & Electrical Requirements for 2010 Crossroads Cruiser 30SK 5th Wheel
    5th wheel RVs typically use a 7-way type wiring set-up, with a trailer plug that looks like # H20046. This mates to a 7-way vehicle socket like # 37185. The linked photo will give you a good view of a vehicle-side socket and the function carried on each of its electrical circuits. The 7-way plug and cable should already be installed and ready for use with your tow vehicle's 7-way. I have linked for you our main page for RV electrical products including 50-amp cords, extensions and inlets....
    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...
  • How to Make 6-Way Square to 7-Way Adapter
    To make a 7-way to 6-way square adapter will require you to get the part # 37995 to use the 6-way end and then wire up a 7-way to it like part # H20043. This will give you the adapter you would need since there isn't one already pre-made.
    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...
  • Troubleshooting Installing New 7-Way and Connector Does Not Work
    A lot of times you can rewire a 7-way by matching color for color but unfortunately the wire colors don't always match. If you check out the picture I attached you can see two different ways a 7-way will get wired. Best solution will be to use a circuit tester like part # PTW2993 to test all of the pins on the new 7-way and see if they match what's on the diagram as you apply the different taillight functions. From there you would need to make the appropriate modifications.
    view full answer...
  • Adding a Battery to a Snowmobile Trailer for Interior Trailer Lights
    Start with mounting a battery. Since the trailer is enclosed, it would be a good idea to mount it on the trailer frame using a battery box like # 329-HM318BKS. Next, you will need to have the right kind of connectors on the truck and trailer. I would use a 7-Way RV style if you do not already have them on the truck and trailer. There is a 12 volt circuit on a 7-Way. You can run a wire from the 12 volt circuit on the trailer side connector to the positive battery terminal. The battery...
    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 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.
    view full answer...
  • Wire Function by Color on the Hopkins 7-way Trailer Connector
    The Hopkins 7-way Trailer Connector # H20046 does not include instructions however all you'll really need to know is the wire function by color on the harness: White - Ground Red - Left turn and brake Brown - Right turn and brake Green - Tail Blue - Brake power Black - 12 Volt Yellow - Aux I've attached a help article on wiring for you. You'll want to wire the harness by function instead of just matching the colors since your trailer very well may be different. I've also attached...
    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...
  • 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...
  • 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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  • Parts Needed To Convert Trailer Surge Brakes To Electric Brakes
    There are a few things to consider when converting the surge brakes to electric on your trailer. I have attached a helpful article that explains what is needed to add electric brakes to a trailer. The first thing you will need to know is the weight rating of your axle. This should be on a sticker or plate. Next you will want to select hub/drum assemblies that use the same bearings as you are using now. The best way to find that information is to remove the bearings and seals from your...
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  • Recommended 7-Way Round Trailer Connector And Wiring
    If you are looking for a round connector with a 7-way blade I recommend part # H20046. This is a trailer end connector with 8 ft molded wire. For a 7-way with 6 ft of molded wire you need part # H20044, and for the connector with 4 ft of molded wiring you need part # H20043. for a connector with a coiled wire I recommend the WesBarg 7-Way, RV-Style Connector, part # WG54006-043. This has 6 ft of coiled wire attached. If you are looking for a 7-way with round pins we do not offer a 7-way...
    view full answer...
  • Can a Trailer Mounted Battery be Charged through a Trailer Connector
    You can add a battery to the trailer that is dedicated to the lights in the trailer. However, you will not be able to up-charge the battery through the 7-Way connector, only maintain the current charge level. In order to charge up the battery you would need to use a battery charger like the NOCO Genius Mini # 329-GENM1 This charger works much better than the old trickle chargers that can overcharge a battery and not work to restore it. This charger provides 4 stages of charging that...
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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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  • 7-Way Trailer Connector for 2008 Toyota 4Runner
    The part you refer to, part # H20046 is a trailer-side 7-way connector, and is not meant to be installed on a vehicle. If you wish to tow a trailer equipped with a 7-way connector, and your 4Runner was equipped with the OEM trailer towing package, it will already have the corresponding 7-way trailer connector at the rear bumper that will accept the H20046 plug you referenced. If the vehicle is not equipped with the tow package, you can install a 7-way. You would first need to install...
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  • Equipping 2004 GMC Sierra to Maintain Battery on Enclosed Trailer
    What you are wanting to do is actually pretty simple. The 12-Volt accessory circuit on your 7-way can be used to tend or maintain your battery on your trailer, but the circuit does not have sufficient amperage to charge a battery that has been completely discharged. Using a battery isolating solenoid like part # TR118665 would be advisable. This will prevent the battery on the tow vehicle from being discharged by disabling the 12-volt accessory circuit from the 7-way once the ignition...
    view full answer...
  • Replacement 7-Way and Junction Box for 5th Wheel Trailer with Non-Functioning Brakes
    Since you have confirmed that your 5th wheel's brakes do not work even when connected to a different tow vehicle you will want to focus on the trailer for your troubleshooting. There are simple troubleshooting steps you can take to isolate the problem on the trailer. First, I suggest checking the condition of the 7-way plug. Sometimes corrosion can develop INSIDE the plug housing where it is all but impossible to detect. Normal exposure to the elements can cause this. Since your brake...
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  • Troubleshooting Trailer that Right Turn Signal Comes On But Wont Blink
    First you will want to check the right turn signal of the vehicle wiring connector to make determine where the problem is. It's either the tow vehicle or the trailer. You will want to use a circuit tester like part # PTW2993 to check the pin on your connector for intermittent voltage when the blinker is applied. If the voltage of the vehicle checks out like it should then I would suspect the problem is either that the light assembly isn't grounding properly or it is shorting out to the...
    view full answer...
  • Recommended Wiring Harness for Rewiring a 26 Foot Gooseneck Stock Trailer
    It sounds like you are wanting to rewire your gooseneck trailer with a 7-way connector. To do this I recommend the 7-way connector # H20046, the bonded 16 gauge 4 wire per foot # 16-4B-1 for the trailer and the 10 gauge jacketed wire # 10-2-1 for the brakes and ground. Often times, people will run the wires from a 7-way such as yours to a junction box like part # 38656. From there, they will run the standard wire colors to the trailer lights, brakes and battery. I have attached a...
    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....
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  • Re-Wiring Old 4-Wire Boat Trailer Plug With a New 7-Way Trailer Plug
    Considering that the 4-wire round connector on your Dad's old boat trailer may be nearing the end of its life (due to use and corrosion) you will be better off replacing the 4-way round connector with a 7-way plug such as # H20046 from Hopkins. Installing a new trailer-side male plug will also avoid the complication and cost of having to use an adapter and it will make the trailer much more user-friendly to the majority of tow vehicles likely to pull it in the future. Installing the...
    view full answer...
  • Recommendations For Re-Wiring Horse Trailer With Brakes
    Since you said you have a 7-way blade connector on your Silverado I would start with the 7-Way Molded Trailer Wire Connector, part # H20046. This is an 8 ft long harness with the 7-way trailer connector. If you need a shorter harness you can check out part # H20044 which is a 6 ft long harness with the connector. You will want a circuit tester like part # 40376 to make sure you match the wiring on the trailer side connector to the functions on the vehicle connector. I then recommend...
    view full answer...

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