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Hopkins 7-Way Molded Trailer Wire Connector - 11' Long

Hopkins 7-Way Molded Trailer Wire Connector - 11' Long

Item # HM20048
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Hopkins Trailer Connectors - HM20048
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This molded, 7-way, RV-style, trailer-end connector lets you replace a damaged wiring harness on your trailer. Lowest Prices for the best wiring from Hopkins. Hopkins 7-Way Molded Trailer Wire Connector - 11' Long part number HM20048 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (50)
  • Q & A (17)
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Hopkins Wiring - HM20048

  • Trailer Connectors
  • Trailer End Connector
  • 7 Blade
  • Plug and Lead
  • Hopkins
  • 11 - 20 Feet Long

This molded, 7-way, RV-style, trailer-end connector lets you replace a damaged wiring harness on your trailer.


Features:

  • 7-Way trailer-end connector lets you replace a damaged wiring harness on your trailer
    • Pre-wired to ease installation
  • Molded to protect wires from corrosion and abrasion


Specs:

  • Cable length: 11'
  • Wire gauges:
    • 14 Gauge - brown, red, green, and yellow
    • 12 Gauge - blue
    • 10 Gauge - black, and white


Wiring Code
Molded Connector (HM20048) Function Usual Trailer Wire
White Wire Ground White Wire
Black Wire 12 Volt (Hot Lead) Black Wire
Green Wire Tail Lights Brown Wire
Brown Wire Right Turn Green Wire
Blue Wire Brake Power Blue Wire
Yellow Wire Reverse Purple Wire
Red Wire Left Turn Yellow Wire





20048 Hopkins 7-Way Molded Trailer Wire Connector - 11 Feet Long

Same as 20248




California residents: click here



Customer Reviews

Hopkins 7-Way Molded Trailer Wire Connector - 11' Long - HM20048

Average Customer Rating:  4.7 out of 5 stars   (50 Customer Reviews)

This molded, 7-way, RV-style, trailer-end connector lets you replace a damaged wiring harness on your trailer.

- HM20048
by:

Well built and works very well highly r ecommended 279947


Comments
i did a complete rewire and added brakes to frt axle and after towing quite a few thousand miles to catch fish i would do it again
Jim m - 08/05/2017

26883

- HM20048
by:

I tried to find this wiring connector locally with the extra long lead and the trailer "professionals" told me it doesn't exist. I got online etrailer.com and found it in a matter of seconds. It arrived days ahead of schedule and is exactly what I wanted, plus it was a great price and high quality! I recommend this company for any and all things towing and trailer related! 529734



- HM20048
by:

Accurate description and fast shipping!! 879123



- HM20048
by:

This product has worked great so far! I used this to replace my factory cord on my 2011 Airstream. My tow vehicle is a 2013 F250 and the plug works perfectly. 825069



- HM20048
by:

I installed it on one of my customers trailers and he has had no problems 797436



- HM20048
by:

Received product on time and in good co ndition. 692634



- HM20048
by:

Ordered this a year ago for a home made trailer I built. It has worked flawlessly with no problems. I will not hesitate to buy this product again. Thanks etrailer 659448



- HM20048
by:

Installed and is working as designed. 636951



- HM20048
by:

Great product, well made. After 22 years old product needed replacing and new product far exceeded my expectations. Product being used on an enclosed snowmobile trailer. 612004



- HM20048
by:

Good replacement. 608167



- HM20048
by:

This cable was of good quality, however, the wiring was different than the typical 7-pin RV connectors. I had to move wires around to make it work on my application. 603268



- HM20048
by:

Great product 598901



- HM20048
by:

Great quality replacement part at a good price! Thanks 592208



- HM20048
by:

the wire colors do not match brown was for left turn signal the only two wires that are right are the white and blue so if you purchase this product make sure you check it first before you wire it in or you will cut it off and rewire it 562960


Comments
There is more than one accepted wire color code convention for a 7-way trailer connector, which is why we list the wire color code in the product description above.
-- Mike L - 09/10/2018

43427

- HM20048
by:

I purchased a female ( TRAILER SIDE) wiring harness and a wiring connector box for connecting the trailer body wiring and trailer plug. This combination works perfectly with my 8 TON goose neck trailer an one ton dual wheel truck. I use Hopkins wiring connectors and accessories on all my farm equipment. and have been very satisfied with them. 561140



- HM20048
by:

HD cord works great 557031



- HM20048
by:

Everything arrived within 3 shipping days, installation simple and clean. Even though it was by email, customer service interaction was extremely impressive, everything from order receipt acknoledgement through confirmation of delivery. 542011



- HM20048
by:

I used this product to update/repair the rather shabby OEM wiring harness. It worked perfectly. I love etrailer! 526648


Comments
Still working perfectly
David M - 06/25/2019

57106

- HM20048
by:

Great addition 505626



- HM20048
by:

This was exactly the product we wanted and it arrived exactly when you said it would. Thank you very much. We will be using this on a fifth wheel homemade trailer. 478016


Comments
It worked great. Thanks.
Kathleen - 02/23/2019

49810

- HM20048
by:

Never had an issue with this. Been through water, mud, extreme heat. 476269



- HM20048
by:

Great service and fast shipping! Thanks! 471814



- HM20048
by:

Perfect, smart sales via phone! 457136



- HM20048
by:

It worked as expected. 454895



- HM20048
by:

I use 4 trucks to pull our horse trailers . 2 with 8' beds, 1 has only the plug under the bumper. the other 2 trucks are short bed trucks again 1 has only the plug under the rear bumper. This cord works well with the different trucks . I had 2 trailers that needed replacement cords. Color code is the same on the Sundowner and the Exiss. 435048


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Ask the Experts about this Hopkins Wiring

  • Parts Needed for 7 Way Connector to Put on 17 Foot Long Food Truck
    It sounds like you're looking for a 7 way trailer side connector. The Hopkins # HM20048 you were looking at is going to be 11 feet long, so it's not quite what you're looking for. The longest 7 way trailer side connector we have available is the 18 foot long Bargman # 50-67-106, which will connect to the 7 way connector on your 2007 Toyota Tundra. If you need to, you can make up any distance you need to on your food trailer with either 10 gauge wiring # 10-1-1 or 12 gauge wiring # 12-1-1;...
    view full answer...
  • What Would Cause Constant Power To Electric Brakes
    I would first recommend checking to see if the breakaway pin is still intact. If the pin has not been pulled, you will want to begin by checking the trailer connectors for dirt or corrosion on both the inside and outside. Once the breakaway pin and trailer connectors are checked, you will need to start tracing the wires back from the trailer connector while checking for breaks or frays. I would agree with your suspicious that you have a short somewhere on the 12v wire on the trailer's...
    view full answer...
  • Which Wire on a Trailer Brake Magnet is the Power and Which is Ground
    Trailer brake magnets have two wires ran to them. Either can be used as the positive side as long as the other is grounded. To test your magnets you would want to apply 12 volts to one of the wires and ground the other wire. You should hear them grab the drum and start humming. For a replacement breakaway switch you could use the # 2005-P. For an 11 foot 7-way that you could wire your trailer to you would want the part # HM20048. You will need to attach the current wires of your trailer...
    view full answer...
  • What is Function of Black Wire on Trailer 7-Way part # HM20048
    The black wire of the Hopkins 7-Way Molded Trailer Wire Connector # HM20048 carries the 12 volt accessory circuit. This is the circuit that will typically power interior lights or charge a trailer's battery. I attached a help article that covers trailer wiring for you to check out as well.
    view full answer...
  • Installing HM20048 Molded 7-Way Trailer Connector on Surge Brake Equipped Boat Trailer
    If you scroll to the bottom of the product page of the # HM20048 connector, you can see the color code chart that shows which colored wire carries which function. The yellow wire on the # HM20048 would carry the signal from the reverse lights, assuming that the center pin of the trailer connector is tied into the reverse lamp circuit. Since you're using a surge brake system, you won't need the blue wire as you suspected. If the trailer doesn't have a battery or any accessories that require...
    view full answer...
  • How to Prevent a 12 Volt Power Circuit on a 7-Way from Being Active All the Time
    What most people use to allow the 12 volt charge wire from being hot all the time and only when the key or the vehicle is on is an isolation solenoid part # TR118665 on the charge wire. You basically run the center pin to a keyed power source and then run one side of the solenoid to the 7-way and the other to the wiring of the truck. If you were wanting to install it on a 4-pole connector that was used strictly for that circuit that is possible too. This wouldn't work through a 7-way...
    view full answer...
  • Getting Side Marker Lights to Function as Turn Signals and Running Lights
    Trailers use what is called a 2-wire system which means the turn signals and brake lights are on the same circuit. When you try to add separate amber turn signals you will need to separate out the brake light signal using a converter, # 118158. On this converter the yellow input wire is for the combined left turn signal and brake light. Green is for the right turn signal and brake light. White is ground. On the output side the yellow wire will be left turn signal only, green is right...
    view full answer...
  • 7-Way and Light Kit Recommendation for Boat Trailer
    The cleanest way to install the # HM20048 would be to use a junction box like part # 38656. The junction box is weatherproof to protect the wiring connections from the elements. You'd also need some ring terminals, one 10 gauge # DW05741-1 and four 14 gauge, part # DW05702-1. I've linked you to a video showing the junction box being installed. The part # TLL36RK is a submersible trailer wiring kit that would work well on your trailer as well.
    view full answer...
  • 7-Way Plug and Lead Recommendation for a Trailer that has a 5-Way Installed on It
    So you have a tow vehicle that has a 7-way connector on it and then a trailer that has a 5-way? What you would need to do is remove the 5-way wiring and install a 7-way with a lead like part # HM20048 which is a 7-way with 11 feet of harness. I attached a picture that has a diagram that has how a 7-way normally wires to a trailer.
    view full answer...
  • Why Would 7-Way Unplug While Towing with a 2015 Chevy Silverado 1500
    Are you sure you don't have a long enough trailer wiring harness? We haven't had any issues with 7-ways pulling out of the # HM40975 that is the same connector as what you have on your 2015 Chevy Silverado. That makes me think you just may have too short of a harness. Plus, we don't offer a 7-way that will fit the opening on your vehicle that opens up instead of down. For an 11 foot 7-way plug and lead you would want the part # HM20048.
    view full answer...
  • What is the Diameter of the Cable on Hopkins 7-Way Molded Trailer Wire Connector # HM20048
    On the Hopkins 7-Way Molded Trailer Wire Connector # HM20048 the outer diameter of the cable is 5/8 inches. On the inside the red, green, yellow and brown wires are 14 gauge, the blue wire is 12 gauge and the white and black wires are 10 gauge.
    view full answer...
  • Installing Trailer Connector and Junction Box on 20ft Gooseneck Trailer
    If you click on the link I've provided, you can see our Trailer Wiring FAQ article, which will show you exactly how the connector on your gooseneck trailer should be wired. I took the liberty of looking in on your order, and saw that you're using a # HM20048 wiring connector and a junction box, which is exactly what I'd recommend. I've provided a wire color code chart for the # HM20048 connector. I've also linked you to an install video for the junction box, which will show you exactly...
    view full answer...
  • Installing 7-Way Trailer Plug on Trailer with Electric Brakes
    I recommend the Hopkins 7-way molded trailer wire connector # H20044. It will measure 6-feet long and provide you the functions required for your electric brakes. If you prefer a longer connector, the same item is available in an 8 foot length as part # H20036 or an 11 foot length as part # HM20048. Please note that the color codes on these molded connectors are different from those usually found on a trailer. The wiring code is on each of the product pages. If you don't have some...
    view full answer...
  • Replacement Axle with Brake Flanges for Rockwood Pop-Up Camper 1940 LTD with 12-Inch Wheels
    We do indeed offer complete axle kits that include the axle beam and spindles, electric brake assemblies, hub/drums along with bearings, races, seals, etc but we just do not happen to have a complete 2200-lb kit that will fit your 12-inch rims so we can help you select individual parts. You have the option of having brake flanges welded to your axles (by a certified welder) that would allow you to install drum brake assemblies and new hubs/drums. The linked article describes the items...
    view full answer...
  • How Does the Husky Brute Electric Trailer Jack # HT87247 Wire to a 7-Way
    The Husky Brute Electric Trailer Jack # HT87247 that you referenced only has one wire that runs from it, the power wire. This wire would need to get run to the 12 volt accessory circuit of the 7-way on your trailer's wiring. The jack grounds through the mounting hardware of it so you would not have to run a ground wire. If you only have a 4-way on your trailer you will need to upgrade that to a 7-way like the part # HM20048. I attached a wiring diagram that shows how the 7-way would...
    view full answer...
  • How to Run a Reverse Lamp Circuit on a Travel Trailer
    Well, that will depend on what your definition of nightmare is. Since you're speaking of a travel trailer, I'll assume the trailer uses a 7-way trailer connector. The first thing you'll want to do is to make sure the reverse lamp circuit is active on the car's trailer connector. Use a circuit tester like # 40376 and test the center pin on the connector as the vehicle is shifted into reverse. The pin should power up. Then, you'll need to see if the 7-way on the trailer is accessible...
    view full answer...
  • Parts Needed to Convert 10 Inch Hydraulic Trailer Brakes to Electric Brakes
    The first thing to check are the drums. Some drums can be used with both electric and hydraulic drums but not all of them. It may indicate if they work with both on the actual drum. If you are not sure then it is safer to also replace the hub and drum assemblies. I will cover that below. If the drums are compatible with electric brakes then the 10 inch etrailer brakes, # AKEBRK-35-SA, will work if the brake mounting flanges the brakes attach to have the 4-bolt mounting pattern. You...
    view full answer...




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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Video Edited:
Jacob T
Written by:
Laura H
Updated by:
Sarah W
Updated by:
Alexander C

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