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• What is the Difference between the Hopkins Trailer Wiring Harnesses HM20041 and H20046?
  There isn't really a lot of differences between the Hopkins 7-Way RV Style Connector with Molded Cable - 8' Long - RV Standard # H20046 and Hopkins 7-Way Blade Style Connector with Molded Cable - 8' Long - Auto Standard # HM20041. Both are 8 feet long and will fit in the standard 7 Way vehicle plug and even use the same gauge wires. However, it is actually the colors of the wires that are different. The # HM20041 will use the auto-industry standard: Black (12v Power), White (Ground), Purple...
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• Which Axle Should Electric Brakes be Installed on with Tandem Axle Trailer
  When installing electric brake assemblies on just one axle of a tandem axle trailer, you will essentially want to choose the axle that is going to be seeing more weight. Typically on utility trailers, most of the weight will be in front of the axles so the brake assemblies will be installed on the front axle. For boat trailers, where the motors are at the rear, you will usually see brakes on the rear axle. I have attached a great article that details everything you will need to install...
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• Solution For Old Reese Elite 5th Wheel Hitch That Chucks And It Difficult To Release
  Hello Bill. 5th wheel hitch technology has come a long way in the last several years. If you are using an old hitch, it is definitely not uncommon to have issues like this. Most older hitches, and even some new lower-end hitches will chuck quite a bit. Not necessarily a bad design, but the design is dated/obsolete. Like you said, replacement parts for this Reese Elite hitch are unavailable. It sounds like your hitch is not safe to use, so I cannot in good conscience recommend that you continue...
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• Replacing Trailer End 4-Pole Connector That Has 8 Wires
  For starters, a quick-fix type connector shown in your photo is typically a good choice for an emergency repair, but I wouldn't use it as a permanent fix. It looks like your trailer wiring has 3 separate grounds and 3 separate running lamp circuits for some reason. This is kind of a strange setup, but if everything worked fine beforehand, there really wouldn't be any need to change that at this point. Your suspicion is correct, I don't believe all those wires will fit in there either. For...
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• 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 should...
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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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• Does a Trailer Junction Box Have to be Used when Switching from 4-Way to 7-Way Trailer Connector
  Junction boxes are great for keeping things organized and for making changing out trailer side connectors and troubleshooting easier. They are not a necessity so you can keep it if you want, it is entirely up to you. If you want to use the junction box, I have linked some videos that might help. The wire colors and the sides of the trailer they are on are actually a little different then what I would expect. Normally the green wire is the right side right turn and brake light wire and...
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• What is AX Auxiliary Pin on Hopkins 7-Way Trailer Connector
  The AX (Auxiliary) location on the Hopkins 48505 connector that you reference, which is the same one used on the Hopkins # H20046, is typically used for 12V power. If you take a circuit tester like part # PTW2979 or # C73NR you should see that the corresponding pin on your 2012 GMC Sierra 7-Way (in the 1 o'clock position) has constant 12V of power running to it. What you would connect this to on your trailer are things like your batteries, a trailer jack, or anything that would need to...
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• What Gauge Wire Is Required On a 7-Way Connector
  On a 7-Way connector the suggested minimum wire gauge for the White (ground) wire, the Red or Black (power) wire, and the Blue (brake power) wire is 12 gauge. The minimum wire gauge for the remaining Green (right turn/brake) wire, the Yellow (left turn/brake) wire, the Brown (tail lights) wire, and the Purple (reverse light) wire is 16 gauge. I have the Hopkins 7-Way Molded Trailer Wire Connector with Lead, part # H20042. This is a 7-Way blade plug on one end and a 3 foot wire lead. Also,...
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• Recommended 7-Way Wiring for 2014 Jeep Grand Cherokee
  For your 2014 Jeep Grand Cherokee, if you have the factory wiring, then all you need is the 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket, Chrysler/Dodge OEM Plug Adapter # HM40975-11933. If you do not have the factory wiring, then you will need the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118727 to get a 4-way connector. Then you will need to use # ETBC7 to upgrade that 4-way to a 7-way. You will also need a brake controller for full 7-way function....
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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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• How Much of Each Gauge of Wire Fit Inside a Wire Loom Comfortably
  I would certainly recommend the 1/2-inch wire loom # 459075-1. It will hold two jacketed 2 wire 10-gauge wire and three jacketed 2 wire 12-gauge wire. See pictures to the right. In addition, I was able to fit comfortably eleven individual 16-gauge wire # DW02359-1 into the 1/2-inch wire loom. I also took a digital caliper to measure the exact radius of each type of wire: 10-gauge is .17 of an inch, 12-gauge is .14 of an inch and 16-gauge is .09 of an inch. The 10, 12 and 16-gauge wiring...
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• Trouble Finding Source To Power 12 Volt Light on Enclosed Trailer
  It sounds like your 12 volt light may have been wired to the trailers 7-way connection so the single 12 volt light would be able to have power when it is connected to a tow vehicle. It could also be connected to a breakaway battery located on the front of the trailer. This would be the only reason I would see someone having both 12 volt and 120 volt lights in a trailer. So they could have a single light powered from the truck when they are traveling between electrical connections.
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• Replacement 7-Way Cable for a Tekonsha Prodigy RF Wireless Brake Controller
  Yes, you can but I am sorry we do not have instructions on how to do this. It looks like a pretty easy process to open up the Tekonsha Prodigy RF Wireless Brake Controller and replace the cable. It comes with an 8' long 7-Way and the best replacement option is going to be item # H20046.
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• 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?
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• How To Add Brakes to a Bass Tracker Boat Trailer
  In most cases, you can just simply add brakes to the existing axle and you don't need an entire new axle. That said, this is all based on the axle capacity and I don't have any way to look this up for you. If you have a 3,500 lb axle for example, you'd need the following: Electric Trailer Brake Kit part # AKEBRK-35-SA Easy Grease Trailer Hub and Drum Assembly part # AKHD-545-35-EZ-K Junction Box # 3375601101 7-Way Connector # H20046 Hopkins Engager Push-To-Test Trailer Breakaway Kit part...
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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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• How To Run 7 Way Wiring From Truck Bumper To Slide-In Truck Bed Camper
  It's hard to say without any photos of your current plugs/connectors. Some slide-in campers like Lance use a proprietary plug that we wouldn't have. Your truck's 7 way is likely a standard one that has flat blades. You could use an extension like Hopkins 7-Way RV Style Connector with Molded Cable - Trailer End - 8' Long - RV Standard # H20046 and run the bare wires to your slide-in camper and rewire it to the camper's plug.
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• Parts Needed To Replace Hydraulic Drum Brakes With Electric Brakes On Trailer With 3500lb Axle
  I would be happy to help! Since your Reliable axle has a 3500lb rating you will need to go with the Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs # AKEBRK-35-SA, hub and drum assemblies # 84546UC3-EZ, and brake mounting hardware # BRKH10B. This will bolt up directly to your existing brake mounting flange and give you the electric drum brakes you are wanting. In addition you will need to add a 7-way connector to the trailer using the #...
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• Hopkins 7-Way Trailer Connector to Older Featherlite Wiring Recommendation
  The diagram you attached shows a 7-way wired up in what is considered the "traditional way." If you check out the chart I attached you will see the three ways (really only 2), that a 7-way can be wired. The Featherlite is wired up like the diagram on the left. Now to wire up the # H20046 all you would need to do is wire up the connector by FUNCTION and not color. If your trailer has the same wire colors as the diagram you attached the blue wires would match up, the brown of the trailer...
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• Looking For Electric Brakes, Hubs And Breakaway Kit For A Boat Trailer With No Brakes
  Hello Steve, thanks for reaching out. The 3,500 lb axles use the standard 10" x 2-1/4" brakes, and for that I recommend the etrailer Electric Trailer Brakes - Self-Adjusting - 10" - Left/Right Hand Assemblies - 3.5K # AKEBRK-35-SA. We also offer a pre-grease hub for a 3,500 lb axle, part # AKHD-545-35-EZ-K. This comes with a pre-greased hub, bearings, seals, races a grease cap and lug nuts. For a breakaway I recommend the Bright Way Trailer Breakaway Kit with 0.5-Amp Charger and 5 Ah...
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• Replacement for Damaged 7-Way Trailer Connector
  By damaged power cable, I assume you are referring to your trailer's 7-way being severed, and while there likely isn't going to be any electrical damage, you will need to replace the 7-way connector from the trailer. You didn't specify what was severed, but this is the most obvious culprit based on how they connect. For that you would be able to splice in a new connector, depending on the length you need: - 4 feet: 7-Way Molded Trailer Wire Connector # H20043 - 6 feet: Mighty Cord 7-Way...
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• Parts Needed to Add Disc Brakes or EOH Brakes to Tandem 3,500 lb Axles on Boat Trailer
  We can get both of your axles set up with disc brakes, and for 3,500 lb axles, since you are converting to disc brakes you'll need a hub-and-rotor disc brake assembly. For the correct kit, as well as the disc brake actuator and brake lines, here is everything you'll need (note for a tandem axle trailer you'll need two of the disc brake kits): - Kodiak Disc Brake Kit - 10" Hub/Rotor - 5 on 4-1/2 - Dacromet # K2HR35D - Bearing Kit for Trailer Brakes w/ 8" or 10" Hub/Rotor - 3,500 lbs #...
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• Parts Needed To Add Electric Drum Brakes To A Flatbed Utility Trailer
  Hi David, To add brakes you'll first need to check the axles to see if there is a brake mounting flange. If not then you'll have to replace the axles in order to get one with a flange so that you can mount brake assemblies. If you do have them then you can use the etrailer Electric Trailer Brakes # AKEBRK-35-SA. These brake assemblies are self-adjusting so once you complete the initial brake bedding process you won't have to adjust the brakes again. From there you'll need a hub/drum...
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