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

Ask the Experts about this Hopkins Wiring

• 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.
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• 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...
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• 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.
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• 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...
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• 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...
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• 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...
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• 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...
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• 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.
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• 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.
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• 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.
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• 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...
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• 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...
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• 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...
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• 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...
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• 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...
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• 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...
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