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Bonded 4 Wire - per foot

Bonded 4 Wire - per foot

Item # 16-4B-1
Our Price: $2.21
Orders above $50 qualify for Free Shipping
Shipping Weight: 0.05 lbs
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Deka Wiring - 16-4B-1
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Great Prices for the best wiring from Deka. Bonded 4 Wire - per foot part number 16-4B-1 can be ordered online at or call 1-833-496-1390 for expert service.
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Deka Wiring - 16-4B-1

  • Wire
  • Bonded Wire
  • 4 Wire
  • 16 Gauge
  • Deka

Parallel primary wire has four parallel conductors bonded together by Thermo-Plastic insulation. Each conductor is independently color coded for easy identification. Meets SAE J1128 Specifications, for use with 50 volts or less.
  • Each Wire is 16 Gauge
  • Price is per foot of wire

16-4B-1 Bonded 4 Wire - per foot

Video of Bonded 4 Wire - per foot

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Deka Wiring 16-4B-1 Review

Today, we're going to review part number 16-4B-1. This is the Deka bonded four wire per foot. This is a parallel primary wire that has four parallel conductors bonded together by this thermal plastic insulation and each conductor is independently color coded for easy identification. Basically, can see that it has the normal four wire color coding. The green, which is your right turning brake wire. Your yellow which is your left turning brake wire. Your brown, which is your tail lights, and your white, which is your ground. Each wire is a 16 gauge and again, on this part number, the price is per foot.

I have a foot of wire right here so you can order as many feet as you like. This is designed for use with 50 volts or less. That should do it for the review on part number 16-4B-1, the Deka bonded four wire per foot. .

Customer Satisfaction Score:

Customer Reviews

Bonded 4 Wire - per foot - 16-4B-1

Average Customer Rating:  4.8 out of 5 stars   (113 Customer Reviews)


Your description on line was the best of anywhere I found. I'm going to make 2 wiring harnesses for my pickup. I'll be towing it behind my motorhome so 1 harness will be from the front bumper to the rear of the bed for a light bar I'm making. Then the 2nd harness will be from the front bumper of the pickup to the rear of my motorhome. I also ordered 2 12" 4 wire loops for each end of the 2 harnesses I'll be making.

They worked out great!
erniet - 10/14/2018


This review covers an earlier purchase of backing plates and brake assemblies for my double axle 16' trailer as well as new wiring for this trailer after repeatedly repairing the wiring purchased from a local store. The brakes work perfectly and the new wiring is so much better than my previous locally purchased wiring. The only problem I have now is remembering to adjust the brakes between the loaded and unloaded trips. Makes the tires last longer!!

Wires are holding up great!! No more breaks or disconnects. This project completes a refitting of my 16 ft car hauler. Earlier parts included brake shoes and backing plates and a new trailer to truck power cable. Very satisfied with all of the items purchased from e-trailer.
Daniel F - 05/20/2017


Fast delivery - Ordered on 9/29/17 - Received on 10/4/17
As a benefit, wire is 16G rather then the normal 20G you find in the stores that have ready made harnesses.
NOTE for etrailer managers. I am a technical person by nature and speaking only for myself, when I buy and pay for a specific amount of something, I expect to get that amount. I'm not pinching pennies with you here; BUT, I bought 30' of this wire and when I received it, I measured it twice and came up with 29' 10". Most places I've dealt with in the past where I buy wire, angle iron, etc.. would give you a couple of inches or more than you ordered versus a couple of inches shorter than what was ordered. Very stingy in my opinion and not fair to your customers.


Thick heavy gauge wire, with stout insulation.
Not like the thin stuff in a harbor freight light kit.
This is something you will be proud to put on your trailer.

helpful comparison, thanks!
-- comment by: Max - 03/12/2016


Yet another part purchased for my 10K lb trailer build.
I am planning on mounting a waterproof junction box for my wiring, these wires will be used to power all of the lights on the trailer. I will run separate wires for the trailer brakes and battery. The quality of this wire looks to be pretty nice.


Having all your wiring color coded and matching for accessories on your camper or trailer is a must as far as im concerned. This roll does just that and makes repairs and connections so much easier. It also prevents shorts and incorrect wiring that alone makes it a must have.


Excellent product, quality, and exact wire gauge I was looking for. I love that I could buy the exact length I needed without buying an entire spool of wire. I'm using this wire on my utility trailer. I needed to lengthen the trailer wire that connects to the vehicle. I covered the wire with split loom and bought new connectors for both truck and trailer. It looks and functions great! Thanks!


This helped make rewiring my trailer very easy .

Trailer gets used twice a month
Lance M - 11/08/2017


super fast shipping. exactly what was needed to get my flatbed trailer back on the road. Prices were great and customer support is fantastic. thanks for all the help and great products.


A good value.

A year later, I have no complaints. Keeping in mind,the wire gets little use abuse...
Steve - 10/22/2021


Online ordering was very easy. Customer service emailed updates every step of the delivery process and allowed me to track my order very easily. Everything came in as expected and in great shape. My first experience with Etrailer has been very pleasant! Thank you!


Hi, I am sorry to give you a not so good review but I feel I must be honest. When I received my wire it was in a rat nest I spent some time unknotting it and some of the wires were not connected to the bonded 4 wire by at least 11/2 foot. however the shipping was fast. Thank You David S.


Wire for trailer lights, good product.


As always my order was received in record time. The products are great quality with some of the best customer service I have ever received. Etrailer goes above and beyond to provide great products as well as very informative technical information.


Good product. Recieved order fast.


Good product easy to install just seemed a bit cheap. It was easier than building my own harness.


The wire, rollers and the fenders were all received in good condition; and are installed on the trailer.

Your site was easy to order from, the price was good; and thank you for your promptness in delivering the order.


I ordered 40' of this for re-wiring my 15' trailer (running it down both sides). This wire is solid yet easy to work with, i.e. separating out an individual wire for splicing, bending, snaking inside trailer framing, etc. This wire is color coded with the 4 standard colors for trailer wiring.


It is wire. However, the length was the reason for ordering as local retail outlets only had 25 foot lengths available and I didn't want splices in the middle of my "toad" taillight connections.


Excellent new wire that I used to completely rewire the trailer. Very good quality, good insulation, nice fresh multi-strand copper wire inside. Superb! Very satisfied!


This wire worked great and is the same gauge on all four wires rather than having a bigger gauge on just the ground like some wire is. I'm glad I ordered the amount I did because I didn't think I would use it but I did.


I am very pleased with the products I have purchased from etrailer. They were shipped right away. Just what I needed. I highly recommend this site.


Products was as expected and received in a timely fashion.

.Would definitely use your company again .Wiring is holding up nicely
Linda P - 06/13/2017


Great for running to back and front of the flat bed for the two sets of brake lights.


I ordered this to re-wire my horse trailer. product arrived as described! Fast shipping and excellent customer service!

Show More Reviews

See what our Experts say about this Deka Wiring

  • How Do Utility Trailer Lights Wire Up to the Trailer Wiring Harness.
    The red wire is the turn signal wire and will be run to the green wire of your harness if its the right turn signal side, and the black wire will run to the brown wire of your harness. The yellow wire from your harness will run to the left turn signal red wire. The brown wire will also run to the black wire of this light also. I attached an FAQ on trailer wiring for you to check out also.
    view full answer...
  • Can Bonded 4-Wire be Used on a Trailer with a 4-Way Connector but with 5 Wires
    The bonded 4-wire, # 16-4B-1 has white, brown, yellow, and green wires. Typically, white is ground, brown is running lights, yellow is left turn and brake, and green is right turn and brake. With the wiring you have as listed, the turn left would connect to the yellow wire, turn right would connect to the green wire, tail marker would connect to the brown wire, and white would be ground. I have included a link to our wiring FAQ that also has some helpful wiring diagrams. On a 4-Way connector...
    view full answer...
  • Trailer 4-Way Wiring Harness has 2 Wires Coming Out of Running Light Pin
    It sounds like you have a wishbone harness. A wishbone harness has 2 wires for the running light circuit, one for each side of the trailer. That way you do not have to run a jumper wire from one side of the trailer to the other for running lights on both sides. These two running light wires will be spliced together to connect to the single running light wire on a 4-Way. Yellow/brown would be for the left side and green/brown the right side. On a 4-Way, trailer side, the covered pin is...
    view full answer...
  • Troubleshooting Clearance Lights that Blink with the Turn Signals
    It sounds like your clearance lights are run to the stop/turn signal circuit instead of being run to the running light circuit. I would recommend you verify the wiring of your trailer and make sure that you have the correct circuit run to your clearance lights. The running light circuit is typically a brown wire and the circuit right next to the ground circuit that is jacketed on the 4-way. Check out the FAQ article I attached on trailer wiring also.
    view full answer...
  • Troubleshooting Running Light Circuit on Trailer
    The first step in troubleshooting your trailer taillights would be to determine if the problem is on the vehicle, or in the trailer wiring. Start first by using a circuit tester like part # 40376. Turn on the vehicle headlights, and use the tester to check the pin on the trailer connector that carries the running light circuit. If you have a 4-pole connector, test the pin fed by the brown wire. If you have a 7-way, check the pin in the 11:00 position. If you get a signal on that pin, the...
    view full answer...
  • Troubleshooting Trailer Light Malfunctions - Running Lights Not Working But Everything Else Is
    If the turn signals are working properly on your boat, but the running lights do not work, then this is most likely a ground issue. The turn signals and brake signals do not require a constant power like what is needed for the running lights. So this is usually when grounding issues become apparent. Since everything is new on your boat trailer, I would check to see if the ground wire on the trailer is grounded to an appropriate metal surface. Boat trailers are commonly made of aluminum,...
    view full answer...
  • After Replacing 4-Way Trailer Connector the Trailer Running Lights Do Not Work
    Your trailer has what is called a wishbone harness. This means that it has 2 running light wires (brown), one for each side of the trailer. These harnesses are used so you do not have to run a jumper wire from one side of the trailer to the other to get running lights to both sides. Since you have connected the 2 brown wires together and are not getting any running lights, I suspect there is a ground problem or a bad connection at the connector on the running light circuit. Make sure...
    view full answer...
  • How Do Trailer Wires with Two Wires Attach to 4-Way Trailer Wiring
    Based on the colors of the wires that are on the lights you bought for your trailer is sounds like the assemblies ground through the mounting hardware, the brown wire is the running light circuit, and the red wire is the stop turn circuit. A traditional 4 wire trailer setup has a stop/turn circuit that runs to either side of the trailer. One for the passenger side (typically green wire) and one to the driver side (typically yellow). So that's two of the four wires. The white wire will...
    view full answer...
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  • Is the Core of the Bonded 4 Wire part # 16-4B-1 Stranded or Solid
    The Bonded 4 Wire part # 16-4B-1 that you referenced uses stranded copper for the core of it and not solid copper. I attached a review video for this product for you to check out as well.
    view full answer...
  • Troubleshooting Trailer Wiring that Doesn't Work,Trailer is Fine and 4-Way Pins Have Voltage
    Since there is voltage on all of the pins of the 7-way and the 4-way when the adapter is used and the trailer seems to work fine with your vehicle the problem has to be the ground circuit of your friend's 4-way on his vehicle. It must be corroded or dirty and that is why the trailer light circuits aren't functioning properly.
    view full answer...
  • How to Wire Up New 4-Way to Trailer that Doesn't Use Standard Wiring Colors
    Your new connector uses the standard trailer wiring color code of: White for ground Green for right stop/turn Yellow for left stop/turn Brown for running lights Your trailer most likely was wired with the color of wire that was most convenient so you will need to use a 12 volt battery with a jumper wire to test all of the circuits by applying voltage to each wire to see what is what. Most likely white is ground and brown is running lights.
    view full answer...
  • Troubleshooting Trailer Wiring that Taillights Wig Wag When Either Blinker is Applied
    First thing to check is the grounds of the trailer lights. Insufficient trailer taillight grounds are notorious for causing seemingly unexplainable taillight behavior like what you described. Make sure that the trailer side connector are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to clean and corrosion free bare metal surfaces. If there is anything between...
    view full answer...
  • Why Would Core of Ground Wire of Trailer Wiring Turn Black
    A ground wire getting hot and discolored is typically a sign of too much amperage being pulled through the wire. An easy fix for that is to reduce the amperage draw of your trailer's wiring by switching to LED lights or by going with a heavier gauge ground wire that can handle the additional amperage. I attached a page that has all of the LED trailer lights we offer as well.
    view full answer...
  • Troubleshooting Trailer Lights That Have Power But Are Not Working
    It sounds like you have power going back to the light, but the light is not working. This is typically an issue with the light ground. If you have the light grounded to the bumper, I recommend running the trailer light ground up to the main trailer ground. If this does not provide a solution, let me know and I will be glad to look into further solutions for you.
    view full answer...
  • Troubleshooting Taillights on EZ Loader Trailer
    To discover and repair the problem, you'll need to closely examine the taillight wiring system on your trailer. Begin at the connector, and closely examine it for damage or excessive green or white corrosion. Clean/repair or replace as needed. Trace each wiring circuit from the connector back to the lamps on the passenger side. Look for loose connections, pinched wires or wires with worn or cracked wire insulation. Check the main ground connection on the trailer tongue, making sure that...
    view full answer...
  • Trailer Left Turn Signal Blinks when Right Turn Signal is Activated
    Nine times out of ten when trailer lights do weird things it is a ground issue. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light but can show up any time. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The...
    view full answer...
  • Left Side Trailer Brake Light and Turn Signal Not Working But Wire as Constant 12 Volts
    It sounds like there is a short to ground, ground problem, or a general short that is drawing 12 volt power all the time. The first thing to do is make sure the vehicle and trailer side connectors are clean and free of corrosion inside and out. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light but can show up any time. The main connector grounds should be attached...
    view full answer...
  • Trailer Lights Will Not Turn On But there is Power at the Vehicle Trailer Connector
    This sounds like a ground issue especially since the adapter you mentioned is lit. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light but can show up any time. Make sure that the vehicle side and trailer side connectors, including the adapter, are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free...
    view full answer...
  • Instructions for Wiring a New 4-Way to a Trailer that Only has Green, Brown, and Yellow Wires
    The white wire is the ground circuit. What you will need to is run the white wire of your new harness to the frame of the trailer. You will want to pick a clean metal surface that is directly attached to the frame. Your taillight assemblies ground through the mounting hardware. That is why the ground attaches to the frame. I attached a help article on trailer wiring for you to check out as well.
    view full answer...
  • Troubleshooting Four Wire Malfunction With No Brake Lights or Turn Function on One Side of Trailer
    I can help you troubleshoot your trailer lights issue. Sounds like you are having a grounding issue with the right trailer light. Even though the running lights work, it would be good to check the main trailer ground and the grounds for each of the tail lights and check the surface that they are mounted to on all sides. If they aren't mounted to a good clean metal surface it can cause some of the issues you are describing. If the trailer has paint, rust, or corrosion in the area you may...
    view full answer...
  • How To Run 4-Way Trailer Wire Harness Wiring For Trailer
    If you have the yellow and green wire as you said, sticking out and attached to nothing, you will have no turn or brake lights working. On trailer wiring, the green wire will be for the right turn and brake and the yellow wire will be for the left turn and brake. The brown wire on a 4-way harness will be attached to the running lights and the white wire coming from the connector is the ground and should be attached to a clean, bare metal surface like the trailer frame. Each light needs...
    view full answer...
  • Wiring Trailer Lights to a Trailer that have a White, Black and Yellow Wire
    To wire up your trailers lights to 4-way wiring should be pretty easy, but you will need to determine the functions of each of the trailer lights. The white wire SHOULD be a ground, the black sounds like it's the running light circuit and the yellow wire is the turn signal/brake light. On your trailer's wiring the brown should be running light, the white should be ground, the yellow left turn/stop, and green right turn/stop. You would just need to wire according to that and it should work...
    view full answer...
    Image 1 for
  • Troubleshooting Trailer Turn Signals that Work But Not Brake Lights
    Sounds like the ground of your trailer is too weak to illuminate both trailer taillights at the same time and that is why the turn signals work but the brake lights do not. Make sure that the trailer side connector are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to clean and corrosion free bare metal surfaces. If there is anything between a light ground...
    view full answer...
  • Recommended Testing Method to Determine Trailer Wiring Functions
    Usually a 4-pole trailer connector will have a white wire as ground, green wire for right turn/stop, yellow wire for left turn/stop and brown for both sides' running lights. But since there is no real standard for wire color on trailers (and since colors can sometimes fade/change after exposure to weather) your best and easiest solution is simply to apply 12V power to the wires one at a time to see what function becomes active. You can use a vehicle's 12V battery or a spare - if like me...
    view full answer...

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