7-Way Round RV Style Trailer Connector - Trailer Side

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• Wiring Electric Jack to Plug Into 7-Way on Tow Vehicle
  
• Although wiring an electric jack like the etrailer.com # EJ-3520-BBX you referenced to a dedicated battery on the trailer is the preferred solution for ensuring you get the needed power, you can indeed wire it to a 7-Way plug like # A7WCB for it to be connected to the 7-Way on your truck when needed. If you don't yet have an electric jack, we actually have a 3,500 pound unit available with the Buyers Products # 3370093500 that is designed to be used this way right out of the box. This...
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• Parts Needed to Add a Brake Controller on a 2013 Jeep Grand Cherokee With or Without the Tow Package
  
• Since you don't have the trailer towing package on your 2013 Jeep Grand Cherokee you do need to start off by installing a 4-Way connector. I recommend the Tekonsha T-One # 118425 as we have found Tekonsha to be one of the most reliable wiring companies that we carry. To have 7-Way and 4-Way connectors on your Jeep you also need the Universal Wiring Kit # ETBC7. This connects to the T-One and give you both connections that you need. It also includes everything you need for the 7-Way to...
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• 7-Way Trailer Socket to Mate with Plug A7WCB
  
• Part # A7WCB uses a connector format known as an RV-style 7-way blade. Although the plug itself is round the actual electrical contacts are flat or blade style. This male plug mates with a female socket such as # 37185 or # 30717. I am not familiar with the DTS brand but I presume it is the maker of the connector you have. My contact at Blue Ox confirmed that the threaded rods on the crossbar can be bent to fit a wide range of 6-way and 7-way trailer socket mounting hole spacing. I...
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• How to Make a 25 foot Long 7-Way Wiring Harness
  
• We have what you would need to make a 25 foot long 7-way harness. You would need the part # DW04914-1 which is jacketed 7-way wiring sold by the foot. And then for a connector part # A7WCB.
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• How to Tow a Jayco Trailer with a 6-Way Square Connector with a Vehicle that has a 7-Way
  
• Sounds like you have a 7-way connector on your 2009 Pilot and are looking for a way to connect it to your Jayco pop up that has one of their square style 6-way connectors. Since there isn't an exact adapter for what you are trying to do your best option would be to remove the square connector from the trailer and install a # A7WCB in place of it. This will allow your trailer to be towed much easier by other vehicles in the future as well. You will want to verify the functions of the...
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• Parts Needed to Make Shorter 7-Way Male to 7-Way Male Adapter
  
• To make an adapter like you are looking for would require the part # H20043 which is a 7-way with 4 feet of wires that you could then wire to a 7-way male like part # A7WCB. The # H20043 could be shortened to whatever length you needed as well. I attached a chart that shows the wiring colors for the # H20043 plus a diagram for a typical 7-way to help you wire up the adapter.
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• 7-Way Male to 7-Way Male Adapter Recommendation that is 4 Feet Long
  
• To make an adapter like you are looking for would require the part # H20043 which is a 7-way with 4 feet of wires that you could then wire to a 7-way male like part # A7WCB. I attached a chart that shows the wiring colors for the # H20043 plus a diagram for a typical 7-way to help you wire up the adapter.
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• How to Tell if Trailer Has 6-Way or 7-Way Installed
  
• It sounds like you have a 7-way blade connector on your boat trailer as that is a very common connector on boat styles. This connector has 6 pins around the outside of the connector and a center pin for a total of 7. Part # A7WCB would be what a 7-way would look like. If you had a 6-way it would look like part # PK11604.
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• Installing 12V Power On Ford F-150 7-Way Trailer Connector
  
• You do not need to connect the 12V power connection on your F-150 7-way. That power is only required if you want to charge a trailer battery while towing or if you are using an electric device on your trailer like a powered sway control or wireless brake controller. It is likely that a fuse or relay needs replaced for the factory function if it was recently interrupted. I recommend checking your owner's manual for fuses and relays associated with this function. If you want to add that...
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• 7-Way Plug Recommendation for Replacing 4-Way of Hitch Light Fixture
  
• What you described is a very good idea. You could just cut off the 4-way of the light and then wire it to the part # A7WCB and you'd be good to go.
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• 7-Way Recommendation for Activating Trailer Brakes on a Trailer with a 5-Way
  
• Typically, the 5th circuit of a 5-way is for a reverse light circuit. I have a solution for you, but you will not be able to use the Adapter 7 Pole to 5 Pole Flat # A75TB to activate your trailer brakes as it has an empty port where the brake output circuit would be on your tow vehicle connector. I would recommend you confirm that the fifth circuit on your trailer is actually for trailer brakes. You can do this by tracing the wires back from the connector and see if they go to the brake...
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• Recommendation for Submersible LED Backup Lights on a Boat Trailer
  
• I can help you add reverse lights to your trailer. Yes, It is important to pay attention to DOT compliance when adding lights on your boat trailer. Compliance will be met if you use the Optronics # BUL10CB light as your backup light. The # BUL72CB is purposed for a utility light and will not meet the criteria for reverse lights on the roadway. In order to add reverse lights to your trailer would would need to have a 7-Way on the trailer and a 7-Way on the vehicle. On the vehicle...
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• Parts Needed to Add Electric Brakes to a Utility Trailer with a 3500 Lbs Axle and Brake Flanges
  
• You will need several items to add electric brakes to your Carry-On Utility trailer. Starting with the trailer you will need a hub and drum that matches the bearings and seal on your trailer spindle and your wheel bolt pattern. The only way to be sure is to check the bearing part numbers and seal part number, but with a 3,500 lbs Dexter axle that has brake mounting flanges you will most likely have the # L44649 Outer and # L68149 inner bearings and # 58846 seal. If these are the correct...
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• Recommended 7-Way Trailer Connector for Both Trailer and Tow Vehicle
  
• It looks like you found the trailer-side 7-way, part # A7WCB. If you need the wiring and connectors as well use part # ET7WK instead. The installation will be much easier. In order for me to recommend the parts you need to add a 7-way connector to your tow vehicle I'll need to know the year, make, and model of it. Also, is there a 4-way on the vehicle now or is there no trailer wiring at all? If you already have a 4-way connector you can use our # ETBC7 kit to convert it to a 7-way....
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• Flat Towing Setup Recommendation for a 2014 Honda CR-V
  
• We have everything you would need to flat tow your 2014 Honda CR-V. First lets start with a base plate kit as that is the attachment point on the vehicle. For that you would want the Blue Ox Base Plate kit part # BX2258. I attached an install video for you to check out as well. The Blue Ox Alpha # BX7365 is the most popular tow bar we offer that has been confirmed to work with the base plate kit so it should work very well. It also comes with safety cables. For trailer wiring you...
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• Troubleshooting Electric Trailer Brakes Not Registering With the Brake Controller
  
• I can help you troubleshoot your brake controller error. Sounds like a grounding issue to the brake magnet ground. I would make sure that the ground wire is secured tightly to a clean surface on the frame. If the wire is attached to the body or a surface with an undercoating or rust it can cause a ground problem. I recommend cleaning the area or finding a better grounding spot for the wire. Another option would be to run all the grounds to the front of the trailer where the main ground...
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• Can I Charge My Trailer Battery Using 7-Way Trailer Connector on Truck
  
• You would not be able to charge your battery through the wiring on your 4-way trailer connector. Since your truck has a 7-way connector, you could maintain the power to the battery but not charge it. To begin, you would need to cut off your 4-way trailer connector and install a 7-way connector on the trailer like the Optronics 7-way, part # A7WCB. You would need to connect the appropriate wires. White is ground, Yellow is left turn and brake, Green is right turn and brake, and Black...
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• Adapter to Convert 7-Way Blade Style Connector on Vehicle to 7-Way Round Pin Connector on Trailer
  
• It sounds like your trailer has a 7-way round pin connector. For an adapter, I'd suggest part # PK12727. The adapter would plug into the existing 7-way on your truck, and provide a 7 round pin female connector for the plug on your trailer. You might also consider removing the existing 7-pin connector from the trailer, and replacing it with the 7-way blade plug like part # A7WCB. The 7-way round pin is getting fairly close to being obsolete. The 7-way blade connector is much more prevalent. I'll...
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• How to Connect Vehicle with 7-Way to Trailer with 5-Pole Flat Wiring for Surge Brake Lockout
  
• The best long-term wiring solution for connecting your vehicle that has a 7-way and your trailer that has a 5-pole flat is to install a 7-way male plug on the trailer wiring. This lets you avoid adapters like # 787196 which can become unreliable over time. We have parts like # PK12706, # A7WCB and # 54-77-003 (and others) shown on the linked page that connect to the trailer's existing wiring to give you a plug that directly matches the 7-way on your Pilot. Another better option is...
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• Wiring And Flat Towing Recommendations For 2004 Jeep Cherokee Towed With Motorhome
  
• To complete the wiring as you wanted I first recommend installing the Tow Ready Diode System, part # TR118821. Then cut the 4-way plug off the harness and install a 7-way plug like part # PK12-707E. For a mounting bracket I recommend part # PK12711U-26. I recommend using the RoadMaster 6-Wire Flexo-Coil Cord, part # RM-1046-R and adding two male connectors like part # A7WCB. Since you said you are planning on flat-towing your Grand Cherokee, there are 5 items needed. This system...
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• Trailer Lights Stay on Once Vehicle Ignition is Shut Off
  
• I suspect your problem is caused by a damaged or corroded trailer connector. Take a look at your trailer connectors, both the socket on your truck as well as the plug on the trailer. Look for green or white corrosion on the pins or sockets of the connectors. If corrosion is visible, there is a strong possibility that the corrosion has spread to the interior of the connector. The terminals that each individual circuit connects to are very close together, if corrosion builds up on the...
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• Does 12V Pin on 7-way Trailer Connector Always Have Power
  
• It sounds like you're asking about the 12V circuit on the 7-way trailer connector on the rear of your 2003 Chevrolet Trailblazer. Some vehicles will always have power and some others will not. We don't have this specific information for your vehicle, but to determine if your 12V always has power you can test the pin in the 1 O'clock position on your 7-way. The other pins will have power when the corresponding light is used or the brake pedal is pressed.
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