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Junction Box and Installation Kit for Autowbrake Trailer-Mounted Electric Brake Controller

Junction Box and Installation Kit for Autowbrake Trailer-Mounted Electric Brake Controller

Item # 3430001-JBK
Our Price: $38.85
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etrailer Installation Kit,Junction Box Accessories and Parts - 3430001-JBK
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This kit lets you install the Autowbrake electric brake controller on your trailer. Junction box, butt connectors, and ring terminals make it easy to splice the controller into your trailer's wiring. 1-636-306-4830 to order etrailer accessories and parts part number 3430001-JBK or order online at Free expert support on all etrailer products. Great prices and Fastest Shipping for Junction Box and Installation Kit for Autowbrake Trailer-Mounted Electric Brake Controller. Accessories and Parts reviews from real customers.
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  • Reviews (14)
  • Q & A (0)
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etrailer Accessories and Parts - 3430001-JBK

  • Trailer Brake Controller
  • Installation Kit
  • Junction Box
  • etrailer

This kit lets you install the Autowbrake electric brake controller on your trailer. Junction box, butt connectors, and ring terminals make it easy to splice the controller into your trailer's wiring.


  • Kit lets you install your Autowbrake trailer brake controller (3430001 - sold separately) on your trailer
  • Junction box makes it easy to connect controller to your trailer wiring
    • Weatherproof, heavy-duty plastic protects wires and terminals from the elements
  • Installation hardware included
    • Ring terminals for connecting wires to studs in junction box
    • Heat shrink butt connectors for joining 2 lengths of wire
    • Zip-ties for securing loose wires
    • Mounting hardware for securing junction box to trailer frame

44-5310A Small Ring Terminal 12-10 Gauge

38656 Spectro Trailer Wiring Junction Box

9214 7-1/2" Long Black Cable Tie Wrap

DW05702 Ring Terminal - 16-14 Gauge - 1/4" Stud Size - Blue

DW05744 Butt Connector - 16-14 - Nylon - Blue

DW05745 Deka Heat Shrink Butt Connector - 12-10 Gauge - Nylon Insulation - Yellow

Customer Reviews

Junction Box and Installation Kit for Autowbrake Trailer-Mounted Electric Brake Controller - 3430001-JBK

Average Customer Rating:  4.6 out of 5 stars   (14 Customer Reviews)

This kit lets you install the Autowbrake electric brake controller on your trailer. Junction box, butt connectors, and ring terminals make it easy to splice the controller into your trailer's wiring.


As expected! Great service from etraile r!


This is almost all of what's needed to install the Autowbrake. I rated 5 stars because the essentials are there, and provide guides when running to the hardware store to buy more ring terminals. The box itself is well built. I didn't use any of the weather-tight crimp connectors. The lack of mounting screws I can understand, because different ones are needed for mounting on metal than wood. I used 1.5" long self-tapping metal screws to mount onto my trailer's tongue.

This box has plenty of room to mount the Autowbrake wiring and the wiring from two 7 way cables. I chopped off the existing 7 way plug and purchased a new plug/cable to have enough wire for installation.

Good kit, but maybe some more ring terminals instead of the weather tight crimp connectors would be nice.


Easy to install and was useful.

Very good product. As expected.
Martin - 01/19/2022


etrailer is an amazing company. This was the very first time I placed an order with etrailer and it was way above and beyond my expectations. Everything I needed for my trailer was in stock. I placed my order on a Sunday night and it was shipped for FREE the following day. My order was delivered 4 days later in excellent condition with the correct items that I ordered. It was easy to track my order from the warehouse to my front door from the shipping email that I received from etrailer. Thanks for the great experience! You will always have my business!! God Bless!


Did what we needed, and have always had good interactions with eTrailer. They are super helpful in identifying what you need and providing clear installation instructions.


This product was very easy to use and kept all my wire splices neat and organized.


Excellent products and fast delivery, extremely happy customer I'll order again and again from etrailers.


This order is for a trailer refit later this year.


I found exactly what I was looking for. Easy to install and have had no problems with it for a year.


I was only able to use parts from the package, but overall they are working satisfactorily.




looks good, have not yet installed



See what our Experts say about this etrailer Accessories and Parts

  • Dimensions of 3430001-JBK Trailer Wiring Junction Box
    The junction box in the Installation Kit for Autowbrake Trailer-Mounted Electric Brake Controller part # 3430001-JBK measures 7" long x 3-1/4" wide x 2-3/4" tall. The overall length with the with mounting flanges included is 8". The distance between the mounting holes on center is 7-3/8". The mounting flange dimensions are 3/4" wide x 1/4" thick.
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  • Recommended 7 way Connector for 2017 Dodge Grand Caravan Using Autowbrake
    The Autowbrake # 3430001 is a great choice! To add a 7 way to your 2017 Dodge Grand Caravan you'll want to use the # ETBC7L, since it doesn't require the wiring of a brake wire into the vehicle like the # ETBC7. You will still need to run a wire for the 12v power, but other than than it's going to be really easy to install since it plugs into your existing 4 way. To complete installation of the Autowbrake I recommend using the Junction Box and Installation Kit for Autowbrake Trailer-Mounted...
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  • 7-Way Connector and Wiring Configuration When Connecting To Junction Box On Trailer
    It really comes down to the 7-way and wiring you are using. You saw the Hopkins 7-Way RV Style Connector # HM20087 which uses the following wiring configuration. White: ground wire Red: left turn/brake light Brown: right turn/brake light Green: tail lights Yellow: reverse lights Blue: electric brakes Black: auxiliary power We also have the Hopkins 7-Way Auto Blade Style Connector # HM20041 that uses the more common color configuration. White: ground wire Yellow: left turn/brake light Green:...
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  • Junction Box and Parts Needed to Add 7-Way Round Connector to Tractor
    I believe what you're needing is the Junction Box and Installation Kit # 3430001-JBK along with the Pollak Heavy-Duty, 7-Pole, Round Pin Trailer Wiring Socket # PK11720 and then 8' - 10' of the Deka Wire - Jacketed 7-Wire # DW04914-1 (sold by the foot). Typically the junction box is located on the trailer side of things so there aren't any kits that come with the tow vehicle connector, but this combination should do the trick! The junction box comes with all of the connections you need...
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  • How To Hook Up Lights On a Flat-Bed Without Splicing
    In order to achieve your goal of not splicing into the factory trailer wiring harness we are basically going to create a wiring harness for the flatbed which would plug into the factory trailer connector. In order to do this we are first going to want a junction box, part # 3430001-JBK. Once we have the junction box we can then run the wires from the headache rack and tail lights to this with part # 16-4B-1 (per foot). After this is completed the only other thing we need to do is attach...
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  • Parts Needed To Rewire and Add New Lights to a 7 X 16 Utility Trailer With Electric Trailer Brakes
    Here is a list of the parts you will need to rewire your 7' X 16' utility trailer. I have added the breakaway kit as it will be required by law as your trailer does have brakes. Hopkins 7-Way RV Style Connector # HM20087 etrailer Trailer Wiring Junction Box # 3430001-JBK Optronics Trailer Light Kit # TL16RK Bright Way Push-to-Test Trailer Breakaway Kit # 3802346 Jacketed 2 Wire (Brake Wire) # 12-2-1 (sold [per foot)
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  • Parts Needed For Wiring Electric Brakes On a Tow-it-All Car Dolly
    Since your Tow-it-All car dolly has electric brakes you will need to have a 6-pin or 7-way blade connector for your dolly. With electric brakes you are required to have a Bright Way Push-to-Test Trailer Breakaway Kit # 3802346 connected to a charge line. This will activate the trailer brakes in the event of a breakaway. Here is a list of all parts you will need. Bargman 7-Way, RV-Style Connector # WG54006-043 etrailer Trailer Wiring Junction Box # 3430001-JBK Bright Way Push-to-Test Trailer...
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  • Bolt On 3,500LB Trailer Axles For a Home Made Specialty Trailer With Electric Brakes
    All of our spindles like the #84 E-Z Lube Spindle # TRU74FR are going to be a weld on application. We do have the Timbren Axle-Less Trailer Suspension System # A35RS545E that allows you to bolt on the assemblies. This will come with the drum brake hub and electric trailer brakes. It uses a 5 on 4-1/2" bolt pattern which is most commonly used with the Karrier ST205/75R14 Radial Trailer Tire with 14" Galvanized Wheel # AM32156. We do have the 7-Way # H20046, Junction Box # 3430001-JBK, and...
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  • Parts Needed to Install New Trailer Plug and Junction Box on Trailer
    I have a solution for you, and it sounds like you're maybe looking for some sort of plug and play option that you can use as an extender into the junction box, but that does not exist. Your best bet is just to cut the plug on your trailer off and wire the loose wires directly into the junction box; you'll then run a new plug out of the junction box to add the new trailer wiring plug. I recommend using the Junction Box and Installation Kit for Autowbrake Trailer-Mounted Electric Brake Controller...
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  • Parts Needed to Add Electric Brakes to a 6x10 Trailer
    There will be a few parts needed to add electric brakes to your trailer. First, you will need to have a flange on the axle that a brake would bolt to. If you do not currently have this flange, you will need to add something like the Brake Mounting Flange # 4-35. This is designed for a 2 3/8" axle and will have a standard bolt pattern for a 3,500 pound braking set-up. With that being said, the # AKEBRK-35-SA will bolt directly to the # 4-35 with the # BRKH10B mounting hardware....
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  • Wiring Needed For Adding Electric Trailer Brakes To a Utility Trailer
    It sounds like the Universal Installation Kit # ETBC7 might be what you are needing for your Jeep. This kit includes the wiring for the 7-way and Brake Controller # RED52VR along with a 20, 30 and 40 amp circuit breakers. Otherwise you would just have to get a 40Amp Circuit Breaker # PK54240PL to use with the Kit # 331-CBK30-EB. For the trailer you will need a Hopkins 7-Way RV Style Connector # H20046, Junction Box and Installation Kit # 3430001-JBK, Breakaway Kit # 3802346 and 12-Gauge...
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  • Parts Needed For Adding 7-1/4 Brakes To Trailer With 2,000LB Axle
    The Easy Grease Trailer Hub and Drum Assembly for 2K Axles # AKHD-545-2-EZ-1K includes the 1" inner diameter Bearings # L44643. The Assembly # AKHD-545-2-EZ-2K includes the 1-1/16" inner diameter Bearings # L44649. To determine which ones will fit your axle you will need to remove the grease cap and spindle nut to find the number on the outer bearing. If there is not one of the bearing numbers stamped on your bearing you will need to measure the spindle using a Digital Caliper # PTW80157....
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    First you will need the Electric Trailer Brake Kit # 23-47-48 to replace your hydraulic assemblies. We have the Dexter Trailer Hub and Drum Assembly # 8-173-16UC3 to get you a 4 on 4 mounting pattern. You will need to disassemble one of your hubs to verify it will fit the new hub as your axle is produced before they maintained records for their axles. This hub uses inner and outer Bearing # L44649 which is 1.063" inner diameter. For the wiring you will go from the Hopkins 7-Way RV Style...
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  • Parts Needed For Installing Electric Trailer Brakes On a Utility Trailer With Dexter 3,500LB Axle
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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Lindsey S
Edited by:
Lindsey S
Employee Kathleen M
Installed by:
Kathleen M
Employee Mike S
Written by:
Mike S

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