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Jacketed 2 Wire (Brake Wire) - 12 Gauge - per Foot

Jacketed 2 Wire (Brake Wire) - 12 Gauge - per Foot

Item # 12-2-1
Our Price: $2.68
Shipping Weight: 0.07 lbs
In Stock
12-2-1 - Jacketed Wire Deka Wire
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Great Prices for the best wiring from Deka. Jacketed 2 Wire (Brake Wire) - 12 Gauge - per Foot part number 12-2-1 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (229)
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Deka Wiring - 12-2-1

  • Wire
  • Jacketed Wire
  • 2 Wire
  • 12 Gauge
  • Deka

  • Each Wire is 12 Gauge
  • Sold per foot

Duplex Brake Wire is made with two plastic insulated primary wires laid parallel and covered with a high quality plastic jacket, protecting the insulated conductors. Each conductor is color coded for easy identification. Meets SAE J1128 Specifications, for use with 50 volts or less.

12-2-1 Deka 12 Gauge Brake Wire

Video of Jacketed 2 Wire (Brake Wire) - 12 Gauge - per Foot

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

Video Transcript for Deka Wiring 12-2-1 Review

Today, we're going to review part number 12-2-1. This is the Deka Jacketed 12 Gauge 2 Wire Brake Wire. This is sold per foot. This duplex brake wire is made with 2 plastic insulated primary wires right here. You can see it at the end. They are laid parallel and they are covered with this high quality plastic jacket which protects the insulated conductors.

Now each conductor is color coated. You can see black and white. Usually when this is used on brake applications, the black would be your power, the white would be your ground. It gives nice, easy identification. This is designed for use with 50 volts or less. Now each wire gauge is a 12 gauge measurement and this wire is sold per foot.

As you can see right here, I do have 1 foot pulled off but you can order as many feet as you'd like. That should do it for the review on part number 12-2-1. This is the Deka Jacketed 12 Gauge 2 Wire Brake Wire sold per foot. .

Customer Satisfaction Score:

Customer Reviews

Jacketed 2 Wire (Brake Wire) - 12 Gauge - per Foot - 12-2-1

Average Customer Rating:  4.8 out of 5 stars   (229 Customer Reviews)


Received the items quickly but box and contents were damaged due to poor packaging, wheel bearings were put in a plastic bag and attached to the brake drums which when the load shifted around the 2 brake drums would contact each other and smash into the attached wheel bearing’s and damage them rendering them unusable, now I’ve got my trailer sitting on jack stands with the hubs removed waiting for a claim to be processed so I can get some new wheel bearings shipped to me so I can put everything back together. Come on guys you need to do better at packing things up.

Thank you for letting us know, I will have our customer service team get in touch with you as soon as possible.
-- Etrailer Expert Brooke M - 08/10/2022


Odelia was phenomenal! 10/10 would reco mmend!


Good quality
Affordable price


I have ordered several things from etrailer and have not yet been dis-satified . Everything is always as described and arrives in excellent condition For anything trailer these guys are the go to guys Prices are as good as it gets and many times with FREE shipping I have rebuilt several vintage trailers and etrailer has been my source for whatever I need to get it on the road and safe


Top quality


Perfect for my trailer. The wire arrived on time and I’m very satisfied with Etrailer


Awesome company to do business with


High quality wire. Has 12 gauge brake wire to supply full voltage to electric brakes.


I am giving two stars, vs one star, because they did send what was ordered in a timely manner. That said, I will never order from etraler again. The complete lack of thought and concern for packaging the order was shocking. Two brake drum kits (we are talking at least 75 pounds total) were thrown into a larger box, along with 100' of loose brake wire and 4 un-packaged or boxed grease seals. There was zero protective packaging and the actual shipping box was of the same gauge/weight as the boxes the drums came in....medium duty corrugated cardboard at best. Needless to say, the shipping box was semi-opened when it arrived, and 3 of the 4 grease seals were missing. This whole situation was/is unacceptable.


Great product at a very reasonable price.
fast shipping.Order arrived at my shop without a scratch.
I am a new customer to etrailer and I will be a returning customer.
Thank you etrailer and the super customer service.


Product found as described.


I Used this cable to connect the electric brakes to the 7 way connector on my trailer. The wires were all color-coded for easy identification.

This cable is durable with a strong outer jacket.
TomD - 07/24/2020


Used this wire to go from front of vehicle to rear, one conductor for the 12-Volt power, the other for the electric brake control.

I use one wire for 12-Vdc and do not use the second wire in the cable. I am using the Curt 7-way Bluetooth controller instead of a cabin mounted controller.
Chiefh - 11/03/2020
I use one wire for 12-Vdc and do not use the second wire in the cable. I am using the Curt 7-way Bluetooth controller instead of a cabin mounted controller.
Chiefh - 11/03/2020


This wiring has held up phenomenally over the past year of installation. I have been underneath the vehicle changing parts and have inspected the insulation jacket while there. Everything looks as good as the day I installed it after a full year of use in Central New York weather. Would highly recommend.

Two years in and the wiring has been switched through three different vehicles and still holding up phenomenally! It was really worth its weight!
Gregory S - 08/14/2021


I've ordered a number of items from etrailer, and in every instance my order arrived promptly, on time and in good shape. I'd recommend etrailer to anyone, there is no shortage of mediocre companies on the internet, ETRAILER IS NOT ONE OF THEM.


Customer service rep was very knowledgeable and outstanding


Was what I expected. Service was good and got here fast


etrailer has been my “go to” for a few years now. Communication is always a top priority and their customer service is second to none! Regarding this Echo, I use it all the time when pulling with our 2019 Subaru Accent and often use it on other vehicles that have older/delayed brake controllers.


It is so nice to have wire that I know will be heavy enough and durable enough to actuate brakes to stop a tilt bed trailer with a tracked bobcat and accessories, about 11K pounds. The weenie wire that it replaced made me nervous every time I took the trailer out. Works well. I actually extended it to the second axle and capped it off to use on a future set of brakes for that axle (which I will certainly get from etrailer!)


I needed to retrofit my twp axel trailer to get it state inspected. I bought everything I needed from etrailer. I love one stop shopping! I was very pleased with the delivery time and the high quality of parts I bought. The brakes work like a charm. The only thing that I would suggest for the company is to recommend break away automatic braking device when selling these brakes. It was required by law in Pa and I had to buy an automatic brake locally.
I would do business with these folks any day. I highly recommend.


Excellent quality and strength. Why skimp on something as important as your hitch? I have purchased three of these Draw Tites - I guess a repeat customer will scream about the true quality a company can garner from repeat customers. When you pull show cars worth six figures, you can't afford a poorly made hitch.
Step up, step out, and don't fret what you are pulling.


E trailer did a fantastic job.
order: Technical support / help was excellent.
Goal, conversion of a 1998 Floe snowmobile trailer from surge to electric brakes.
Problem, due to time and corrosion, I could only supply partial part numbers, spindle diameter.
etrailer did a fantastic job, researching, and getting me the correct part numbers, so I could order.
Julie did a great job.
She was very timely, communicated clearly and honestly, and just “kept me in the loop”.

I received the order came on the projected date, complete and undamaged. Excellent.
I would highly recommend etrailer, for your part needs.


I wanted a jacketed wiring for a snowmobile trailer brakes to protect from the elements. Initially thought it was a little expensive, however it's a quality product and I appreciate being able to buy it by the foot.


This is high-quality 12-gauge stranded wire of a size appropriate for single-axle trailer brakes, though it only carries the current for one magnet (over from the other side). That other side uses the 10-gauge size of this wire up to the tow vehicle plug. This wire has a high-quality outer protective sheathing to resist abrasion and weathering. Remember to solder and weatherproof all your splices! Wire nuts or Scotch-Locs are not appropriate for use in trailer brakes systems!


Used this cable to run power from a voltage reducer to an LED light bar on a 48V golf cart. Fit the bill of what I needed, looks to be good jacket, insulation and wire quality. Installed about 10 months ago and no issues.

Show More Reviews

See what our Experts say about this Deka Wiring

  • Will 30 Feet of # 12-2-1 Deka Wire be One Wire
    When you order 30 feet of # 12-2-1 we cut it to length in our own warehouse so it's going to be one 30 foot wire and not several shorter wires cut into pieces.
    view full answer...
  • Solution for Carefree Colorado Travel-R Awning that Needs Replacement Jacketed 14 Gauge Wire
    We have a pretty close option with the Jacketed 12 gauge wire part # 12-2-1 which we offer by the foot. This would work great to replace a double bonded 14 gauge wire setup. The slightly thicker core of the 12 gauge wire compared to 14 would not cause any issues. It's typically only ever going to be an issue if you were to go to slightly thinner gauge wire and not thicker like what I mentioned.
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  • Is the Jacketed 2 Wire # 12-2-1 Copper or Aluminum Wire?
    The Jacketed 2 Wire # 12-2-1 contains copper wires. The copper is annealed which can sometimes give it some discoloration which is why it looks more aluminum in the image.
    view full answer...
  • What Gauge Wire Should Be Used to Wire Up Trailer Brake Assemblies
    If it were me I would go with 10 gauge wire. For that you would want part # 10-2-1. Some people use 12 gauge wire and have success, but honestly I would rather have to heavy of gauge wire than not heavy enough. So to be on the safe side I would go with the 10 gauge. The 10-2-1 is sold by the foot, so you will need to order a quantity of how many feet you would need. I attached an FAQ on trailer wiring for you to check out as well.
    view full answer...
  • Is Deka Wire Available in 10 and 12 Gauge?
    We have both of the Deka wires you were searching for. Deka 12 Gauge Jacketed 2 Wire # 12-2-1 and Deka 10 Gauge Jacketed 2 Wire # 10-2-1. Each of these products is going to be available by the foot; simply input the total number of feet you need of each in the "Quantity" box. I've added links to a couple review videos of these products for you to look at.
    view full answer...
  • Which Wire Sized Should be Used for Electric Trailer Brakes
    You should use 10 gauge wire for electric brakes which is pretty much the standard size for electric braking applications because it can handle the amperage better over the long distance from a brake controller to the electric brakes. For a nice duplex cable with two 10 gauge wires you can use # 10-2-1 which is sold by the foot. I have also included a link to our help article on adding electric drum brakes to a trailer.
    view full answer...
  • What Wire Gauge Should be Used for Electric Trailer Brakes?
    It would be fine to use either 12 gauge wire # 12-2-1 or 10 gauge wire # 10-1-1. However, we generally recommend using the 10 gauge wire for running the 12V power to your electric brake to avoid the wire potentially overheating.
    view full answer...
  • One Side of Trailer Brakes Work But Other Side Does Not But Uses Same Wire
    It sounds like the left side may have a bad ground in the system or a loose ground. I would check over the complete wiring system and make sure all grounds have a good metal contact and no rust. Also check the wires to make sure the protective coating is not worn and that there are no bare wires exposed. The connector from the vehicle to the trailer could also be corroded, you will want to check inside the connector to make sure. If there is not corrosion, it would be a good idea...
    view full answer...
  • Troubleshooting an OS and a CS Code On Electric Brake Controller
    On the Valley Journey brake controller, the OC code indicates that the manual override lever is being applied and there is no trailer connected. The CS code indicates there is a detected short circuit. Often the cause of this is corrosion at the trailer connector. Check the vehicle side and the trailer side for corrosion. If corrosion isn't the issue, then I would start on the vehicle side. First, do you have those codes without a trailer connected? If not, then we know the problem...
    view full answer...
  • Wiring Needed For Electric Trailer Brakes On a 7,000LB Car Hauler Trailer
    For the brake wire on your 7,000lb car hauler you will want to use a 12 Gauge Wire # 12-1-1 for the power wire. The ground wire can either be grounded to the frame or you can use the Jacketed 2 Wire # 12-2-1 if you are not using the frame as a ground. I have included a chart below that has the suggested wiring sizes needed for a 7-way trailer harness. This wiring will need to connect to your 7-Way Junction Box # e99011 and Breakaway Kit # 20400.
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    Image 1 for
  • What Gauge Wire will Fit Into a Vehicle Side 6-pole Round Trailer Connector
    Both the Hopkins # HM48420 and the Pollack # PK11609 will accept a maximum of 12 gauge wire, so neither will accommodate 10 gauge. To get aux power and ground to your 6-way, you will want to run a length of 12 gauge wire like our 12 Gauge Primary Wire # 12-1-1 or # 12-2-1.
    view full answer...
  • Parts Needed To Add A Battery To An Enclosed Trailer
    In order to add an auxiliary battery to your enclosed trailer you would need some primary wire to go from the interior lights to the battery part # 12-2-1 (per foot), a 7-way trailer connector to charge the battery part # PK12706, and then some more primary wire to go from the trailer connector to the battery part # 12-1-1.
    view full answer...
  • Why Use 10-Gauge Wire # 10-2-1 Rather Than 12-Gauge # 12-2-1 for Electric Trailer Brake Circuits
    You are correct that Deka Jacketed 7-Wire # DW04914-1 uses 12-gauge conductors for all but the ground wire, which is 10-gauge. There are several variables with trailer brake wiring that we generally do not know when our customers ask about the wire gauge that should be used for re-wiring a trailer's electric brakes. The length of the trailer (and the required wiring) and the number of axles (and brake assemblies) can vary and when we do not know all of the particulars for every installation...
    view full answer...
  • Installation Of ETBC7 Kit Based On Diagram
    You technically can run one hot lead from the battery and split it out before the circuit breakers and it will work. I prefer to use the separate wires like # 12-2-1 just to keep from splicing an additional time. Basically you would be taking the surface area that the current runs down and splitting it instead of giving it the entire pipeline to save a foot or two of wire depending on where you place your circuit breakers. If you want to save that amount of wire, it will work the way...
    view full answer...
    Image 1 for
  • Installing A 12V Outlet For Running A Portable Refrigerator In SUV
    To run your portable fridge in your SUV, I recommend you use the Roadmaster 12 Volt Outlet Kit, 20 amps # RM-9332. This will connect directly to your battery and will then help your smart alternator to kick in as needed. You may want to consider using # 12-2-1 for any wiring length you need to add.
    view full answer...
  • Recommended Junction Box For Individual Trailer Brake Wiring
    My recommendation for the junction box is the Pollak 10 terminal Junction Box, # PK52248. This will give you individual terminals for your 8 contacts. I'd suggest using the other two for a hot supply line and a ground line so you can just add jumper wires within the junction box itself. Your application will be a customized one, but this additional junction box will allow you to have the simple troubleshooting you desire. I would not go smaller than 12 gauge wire for trailer brakes,...
    view full answer...
  • Solutions for Green Wire of Trailer Wiring harness part # 118494 Not being Long Enough
    We had one customer who installed the # 118494 on a similar Equinox as yours and was able to tuck the green wire behind the weatherstripping at the bottom of the tailgate to get enough of the wire to not need to extend it. Otherwise you could easily extend it with double bonded 12 gauge wire part # 12-2-1 which is sold by the foot.
    view full answer...
  • Can Electric Brakes Replace Hydraulic Brakes on a 1995 Jayco Eagle
    There is less maintenance with electric brakes compared to hydraulic brakes so switching to an electric braking system would help in that regard and since you already have a brake controller there isn't any additional major costs. You could also still use the same coupler you have now though it will still move in and out. Most people go ahead and change out the coupler too. We have a lot of A-frame couplers depending on the capacity needed. For the brakes the trailer will need to have...
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  • Installation of Solera Manual Pull Style to Power Awning Conversion
    The Solera Manual Pull Style to Power Awning Conversion Kit, Black # LC329251 will simply require changing the heads on your awning frame and then wiring the unit. I've attached the photo from the installation manual that specifies how to wire the awning. There are specifics, but the biggest aspect not included in the kit is the wire to the battery and ground. You will want # 12-2-1 sold by the foot for your wiring. I've also attached a link to the instructions to assist.
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    Image 1 for
  • Needed Wire For Rewiring Electric Trailer Brake
    For rewiring your brakes, I recommend the 12 gauge # 12-2-1. This is a strand of 2 heavy-duty 12-gauge wires, color coded for easy identification and jacketed individually and then together. This meets SAE J1128 specifications up to 50 volts and its insulation is rated to 105 degrees Celsius. This is sold per the foot.
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  • Upgrading A 5 Flat To A 7 Way And Where To Connect Reverse Solenoid Wire
    The reverse solenoid will be wired to the reverse light circuit on your vehicle. You can use a 7 way plug like # PK12706. We also sell 12 gauge jacketed 2 wire by the foot in part # 12-2-1. The reverse lights are generally wired to the center pin on the 7 way plug # PK12706. I have included a diagram which the locations of each circuit.
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    Image 1 for
  • Old Light Bar Had Just 1 Power Wire and New Light Bar has 2 Wires
    Your old light bar sounds like it grounds through the mounting hardware, which is common. That would be why it only has 1 wire. The new light bar has a power wire and a ground wire. You would just need to ground that one ground wire to a bare metal surface. The other wire is the power wire and will attach to the same place as the previous light bar power wire. We have jacketed 2-wire # 12-2-1 sold by the foot. This is 12 gauge wire so it is a bit overkill for LED light wiring though it...
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  • Trailer Brakes Not Working On A 2016 Chevrolet Silverado 3500
    The first thing you will want to do is check the inside of both the vehicle's and trailer's connectors for debris or corrosion. If corrosion is present, you will then want to spray some electrical parts cleaner on the inside of the connectors to clear the debris. The next thing you will want to do is test the 5 o'clock pin at the back of the vehicle's trailer connector to make sure it is receiving power when the manual override on the brake controller is activated, you will need to have...
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  • Installing Brake Wiring on a Trailer
    I have attached a diagram for you to check out. This is taken from a helpful article on our site about wiring that I have linked for you as well. The Blue wire on the diagram is what you want to pay special attention to. If you can route it through a tube for more protect then that's what I recommend doing. The wire that should be used for the trailer brakes needs to be 10 Gauge Wire # 10-1-1. You can use Butt Connectors # DW05745-5 to make your connections. Simply splice 2 ends of the...
    view full answer...
    Image 1 for

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