20 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 30" Ground

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• Recommended Installation Screws for 1/2 Inch Metal Loom Clamp # A0500
  For the Metal Loom # A0500 you will want to use the self-tapping screws like the part # FA1131822. The nice thing about this screw is that it doesn't require a pilot hole, just line it up and let the drill bit end of the screw do the work for you. This threaded screw will secure your loom clamp securely on your trailer. I have linked the above mentioned products to this page for your purchasing convenience.
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• How To Replace 4-Way Trailer Connector with 5 Wires with One That Has 4 Wires
  In order to replace a trailer side 4-way connector that has five wires like the 20 Ft 4-Way Trailer Wiring Harness part # A20WB with a trailer side 4-way connector that has four slots/wires like the Quick Fix 4 Pole Flat Trailer End part # HMC20031 you'd simply need to combine the two brown wires as they are running lights for each side of the trailer. In regards to the trailer lighting issue, you likely have some sort of short on the green wire or a loose connection.
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• Replacement 4-Way Flat Wiring Harness for 1959 Hawthorne Trailer.
  If your current wiring is still working a Test Light # PTW2993 can be used to help determine what color wire controls what on your current wiring at the taillights and any marker lights along the way. I have also linked an article on 4-way wiring below for you to reference as well. Otherwise you can use a 12 volt battery grounded to your trailer chassis to test the individual wiring by providing battery positive to each wire to determine what each wire powers. I recommend replacing the...
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• Recommended Trailer Wiring Replacement For Sea Doo Trailer
  With two brown wires in your photo it indicates a wishbone harness basically allowing running lights to be sent to each side from the coupler location instead of using a jump wire from one side to the other. This is very common to use with boat and personal watercraft trailers. It looks like the end of the connection has where the dog chewed the wires and if so, you can simply use the Hopkins Endurance Quick-Fix Replacement 4-Way Flat Trailer Connector w LED Test Lights - Trailer End...
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• Troubleshooting Trailer Lights Where All Functions Don't Work or Are Dim
  Tail lights do have individual ground connections. This is often through the mounting hardware instead of having a separate ground wire. With a weak ground connection you may still get some function on the light without all functions working. I recommend cleaning the mounting locations to make sure you have a bare metal to metal connection. If that doesn't solve your issue I recommend tracing your wires using a circuit tester like # PTW2993 to see if there is a short which I wouldn't...
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• Recommended Parts to Wire a Truck Bed Converted to a Trailer
  To control your former trucks lights you are going to need the 20 Ft 4-Way Trailer Wiring Harness item # A20WB. This will give you a 4-flat connector that will plug into your tow vehicle and enough wiring to get back to both tail lights. Depending on whether or not the brake and turn signals are run through different bulbs and wires you might need a converter. The Vehicle to Vehicle Tail Light Converter item # 118158 is what you need if your wires are separate. However, if they are combined...
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• Wire Color for Each Function on 4-Way Trailer Wiring
  You likely saw it on our wiring help article which I linked. The traditional wire coloring of a standard 4-way like # A20WB is both browns to your running lights, one per side of the trailer, green to your right turn and brake light, yellow to the left turn and brake light, and the white is the ground wire.
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• Recommended Axle Setup For a 5 X 8 Off-Road Trailer With Jeep Wheels
  I recommend using the Timbren Axle-Less Trailer Suspension System # ASR1THDS03. This system has a upgraded spindle designed for additional strength. It includes a 4" lift spindle for additional ground clearance and will place your hub face for your Jeep wheels 8-1/2" from the frame and the axle centerline 9-5/8" below the bottom of the frame. If this is not far away enough for your Jeep wheels and tires you will need to then use some wheel spacers to push the wheels out further. The Electric...
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• Using the AutowBrake Brake Controller with a 1999 Toyota 4Runner and a 1997 Toyota Previa
  Installing the Autowbrake brake controller, part # 3430001, doesn't actually requrie you to make any changes to the 4-way connectors on your vehicles. All it needs to function is to be wired to the proper wires on the trailer and a constant power source. If you want, you can wire the Autowbrake's power wire (the black wire) to the trailer's running lights and then it will have power as long as you tow with your lights always on. The downside to this is you will then always be drawing...
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• Parts to Install Full 7-Way Wiring Kit on Trailer
  To add a fully-functional 7-Way wiring kit on your 14' Hudson trailer I recommend the following parts: Trailer Wiring 7-Way Upgrade Kit # HS381-9000 20 Ft 4-Way Trailer Wiring Harness - # A20WB 10 Gauge Wire - # 10-1-1 16 Gauge Wire - # DW02359-1 Heat Shrink Butt Connectors - Parts # DW05744-10 and # DW05745-10 The Upgrade Kit comes with a junction box that acts like a "hub" for all of your trailer wiring. This makes it easier to connect your wiring to the various functions as well as...
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• What is the Wire Gauge Used in Optronics 20-ft. Wishbone 4-Way Trailer Wiring Harness A20WB
  The Optronics 20-ft. Wishbone 4-Way Trailer Wiring Harness # A20WB is constructed with an aggregate wire gauge (AWG) of 20 for the brown, yellow, green and white wires. I confirmed this with my contact at Optronics. The white ground wire with ring terminal is 30-inches long to allow for flexibility in attaching it to your trailer frame. A solid ground is essential for proper operation of your trailer lights. Attach this wire to a clean bare metal surface. You can also use dielectric grease...
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• What Color Are the Brake Lights On A 4-Way Flat Plug Of Wishbone Wiring Harness?
  The brake signal is run along with the blinker on separate wires. The passenger side is normally green and carries the right turn and brake light. The driver's side is normally yellow and carries the left turn signal and brake. The remaining functions are running/tail lights on the brown wire and the ground which is the white wire. I've attached an article to assist. A wishbone harness like # A20WB will give you two brown wires so you don't need to run a jump wire from one side of...
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• Trailer Lights Stop Working When Headlights are Turned On with a 2007 Chevrolet Avalanche
  The most likely cause of your problem is a bad ground connection. It has enough of a connection that it works in the day time because you have less current draw on those circuits with the head lights off. As soon as the headlights are on, you are pulling more current than the weak ground can support. Check the ground connections on the trailer wiring. Make sure you have good metal to metal contact. Paint and corrosion can act as insulators so make sure the grounds are touching clean metal....
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• Wiring a 2011 Victory Motorcycle and Trailer for Towing
  For simplicity, I would recommend wiring the motorcycle trailer as a vehicle trailer would be. A powered converter wiring kit, like part # C59496, would be connected to the motorcycle, which would provide a 4-pole trailer connector. The converter combines the brake lamp and the directional signal onto one circuit. The 4-pole connector utilizes four circuits, the white wire which is the ground, the green wire carries the right turn and brake light combined on one circuit, the yellow wire...
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• How to Connect 4-Way Trailer Wiring with a Wishbone Harness
  You have a wishbone harness like # A20WB. This type of wiring harness splits the running light circuit at the trailer connector, so you don't have to run a jumper wire from taillight to taillight. The yellow/brown wire is the running light circuit for the driver side. The green/brown wire is the running light circuit for the passenger side. It's good idea to test your vehicle wiring for each function using a circuit tester like part # PTW2993. You'll connect the wiring based on function...
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• What are the Wire Functions on 4-Way Trailer Side Connector 18004
  On the Draw-Tite 4-Way flat trailer side connector # 18004, the white wire is ground, brown is running lights, yellow is left turn signal/brake lights, and green is right turn signal/brake lights. Some trailers have what is called a wishbone harness, such as # A20WB. These harnesses will have 2 running light wires, one for each side of the trailer. This is so you do not have to run a jumper wire from one side of the trailer to the other to get running lights on both sides.
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• Wiring Harness for a 2011 Kia Sedona
  The wiring kit you will need for your 2011 Kia Sedona is the T-One Wiring Harness # 118410. This kit will give you a 4-way connector to to power up the lights on your utility trailer. For your trailer you can use the 20 ft. Wishbone 4-Way Trailer Wiring Harness with 30" Ground Wire # A20WB. I've added links to install videos of each of these products as well as a help article on trailer wiring which you may find useful.
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• 4-Pole to 5-Pole Trailer Wiring Adapter
  If you need a 4-pole to 5-pole wiring adapter we have several including part # 20036; this and the other similar items are shown on the linked page. These adapters allow adding an additional circuit to a 4-pole. If you need a different item please send along a photo to show us exactly what you have and what you need to replace. I also included a link to our main page for all types of wiring adapters.
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• Recommended Replacement 4-Pole Wishbone Trailer Wiring Harness
  It sounds like your trailer has a special type of 4-pole connector called a wishbone harness, such as 20-foot # A20WB or 35-foot # A35W42B. These wishbone harnesses simply use two brown running light wires to make it easier to wire your trailer's lights. The dual wires mean there is no need to run a jumper wire from one side of the trailer to the other; one wire runs down each side of the trailer frame. You can use butt connectors like # 05731-5 which you can wrap in electrical tape for...
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• Why Does 4-Pin Trailer Wiring Have 5 Wires
  Your 4-pin/5-wire wiring harness is what is called a "wishbone" type which simply means that there are two separate running light wires, one brown and one pink. This allows a separate running light wire for each side of the trailer which saves you having to run a jumper wire from one side of the trailer to the other. We offer lots of wiring items just like this, such as # A35W42B, # A20WB and # A10-4225VP, which happen to use two brown wires instead of one brown and one pink. The functions...
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• Wire Gauge for the Wishbone 4-Way Trailer Wiring Harness, # A20WB
  I spoke with my contact at Optronics about the Wishbone 4-Way Trailer Wiring Harness, # A20WB. They had documentation stating the green wire is 19 gauge and the yellow wire is 20 gauge. She could not state for sure what gauge the white and brown wires are but either 19 or 20.
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• How to Extend Short Ground Wire on 4-Pole Wishbone Harness
  Wishbone 4-pole harnesses like # A35W42B, # A20WB, # W002230 and # A10-4225VP usually do have a short ground wire because most trailer frames are steel and they conduct well enough that a ground wire attached near the tongue will provide sufficient ground even for lights mounted all the way at the back of the trailer. On the other hand if you have an aluminum frame trailer that does NOT conduct electricity nearly as well as a steel frame then you might need to extend that 2- or 3-foot...
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• Wishbone 4-way Recommendation
  I think your best option for a 4-way would be to get a 20 ft. Wishbone 4-Way Trailer Wiring Harness # A20WB. This is a male side 4-way with a 20 feet section of wire that could easily be cut down to 2 feet. This is also a wishbone setup that has 2 wires run for the running light circuit.
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• Does Optronics A20WB Trailer Wiring Harness Use All-Copper Wire
  The Optronics 20 foot 4-way trailer wiring harness, part # A20WB is constructed of 18 gauge stranded all-copper wire. I've confirmed this with my Optronics representative.
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