Parts Needed to Add Electric Brakes to Trailer With 12,000 Pound Air Brakes
Question:
Have a trailer with 12k air brakes but the axels have no mounting flange for electrical brakes it’s dexer axels do I have the axels machined and change the spindles and add flanges
asked by: Jeff L
Expert Reply:
More than likely you will be able to just add a brake flange and won't need to swap out the spindles. If by 12k air brakes you mean you have tandem 6,000 lb axles then you could use the Brake Mounting Flange for 3" Round Axle # 4-44-1. You will want to take this to an axle shop for installation since they will need the proper equipment to mount it. If you actually have 12,000 lb axles then we do not have a brake flange or spindle/brake flange that large. If you can't find either then your only choice may be axle replacement.
Your existing hubs and drums should work with the electric brakes, but if you need a replacement you can use the Dexter Trailer Hub and Drum # 8-201-9UC3-EZ along with the Dexter Nev-R-Adjust Electric Trailer Brake Kit # 23-458-459 for 6k axles. For 12k axles you would need the Dexter Trailer Idler Hub Assembly # 8-214-8UC1, the Dexter Trailer Brake Drum # DX34XR, and the Electric Trailer Brake Kit w/ Dust Shields - Self-Adjusting # AKEBRK-12.
If you need to add a 7-way you can use the Hopkins 7-Way RV Style Connector with Molded Cable # H20046 and then use the Trailer Wiring Junction Box # 3375601101 for a clean connection to your new 7-way connector. You will also need to run # 12-1-1 from the junction box to your electric trailer brakes. It is a good idea to use Heat Shrink Butt Connectors # DW05745-10 to keep the wiring sealed from the elements.
If you don't already have a brake controller I recommend the Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR. Depending on your vehicle there may be a custom wiring harness for a plug and play installation.
I have attached some review and installation videos along with a helpful article on adding electric brakes for your reference.
Products Referenced in This Question
Dexter Nev-R-Adjust Electric Trailer Brakes - 12" - Left/Right Hand Assemblies - 6K
- Trailer Brakes
- Electric Drum Brakes
- Standard Grade
- Self Adjust
- 12 x 2 Inch Drum
- 6000 lbs Axle
- 14-1/2 Inch Wheel
- 15 Inch Wheel
- 16 Inch Wheel
- Dexter
more information >
Trailer Wiring Junction Box - 7 Color Coded Terminals - ABS
- Accessories and Parts
- Trailer Wiring
- Junction Box
- Buyers Products
more information >
Dexter Trailer Hub and Drum Assembly - 5,200-lb and 6,000-lb Axles - 6 on 5-1/2 - Pre Greased
- Trailer Hubs and Drums
- Hub with Integrated Drum
- Pre-Greased
- 25580
- 15123
- For 5200 lbs Axles
- For 6000 lbs Axles
- 6 on 5-1/2 Inch
- 14-1/2 Inch Wheel
- 15 Inch Wheel
- 16 Inch Wheel
- 16-1/2 Inch Wheel
- Dexter
more information >
Dexter Trailer Idler Hub Assembly for 12,000-lb Axles - 8 on 6-1/2 - Oil Bath
- Trailer Hubs and Drums
- Hub
- Oil Bath
- 3984
- 28682
- For 12000 lbs Axles
- 5/8 Inch Stud
- 8 on 6-1/2 Inch
- 16 Inch Wheel
- 16-1/2 Inch Wheel
- 17 Inch Wheel
- 17-1/2 Inch Wheel
- Dexter
more information >
etrailer Electric Trailer Brakes w/ Dust Shields - Self-Adjusting - 12-1/4" - Left/Right - 12K
- Trailer Brakes
- Electric Drum Brakes
- Standard Grade
- Self Adjust
- 12-1/4 x 5 Inch Drum
- 12000 lbs Axle
- 16 Inch Wheel
- 16-1/2 Inch Wheel
- 17 Inch Wheel
- 17-1/2 Inch Wheel
- etrailer
more information >
Deka Heat Shrink Butt Connector - 12-10 Gauge - Nylon Insulation - Yellow - Qty 10
- Wiring
- Wire Connectors
- Butt Connectors
- 12-10 Gauge
- Deka
more information >
Dexter Trailer Brake Drum for 12,000-lb and 15,000-lb Axles - 12-1/4" x 5" - 8 on 6-1/2
- Accessories and Parts
- Trailer Hubs and Drums
- Drums
- 12-1/4 x 5 Inch
- 8 on 6-1/2 Inch
- Dexter
more information >
Hopkins 7-Way RV Style Connector with Molded Cable - Trailer End - 8' Long - RV Standard
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 6 - 10 Feet Long
- Plug and Lead
- 7 Round - Blade
- Hopkins
more information >
Redarc Tow-Pro Elite Brake Controller - Dash Knob - 2 Braking Modes - 1 to 3 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Dash-Mounted Knob
- Hidden
- Up to 3 Axles
- Indicator Lights
- Redarc
more information >
Product Page this Question was Asked From
Brake Mounting Flange for 3" Round Axle
- Accessories and Parts
- Trailer Brakes
- Disc Brakes
- Electric Drum Brakes
- Hydraulic Drum Brakes
- Brake Mounting Flange
- 12 Inch
- 3 Inch Diameter Axle
- Redline
more information >
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