Parts Needed to Add Electric Drum Brakes to Trailer with 3500-lb Axle
Question:
Im looking to install electric brakes on my trailer and brake controller in my vehicle. Vehicle: 1998 Jeep Cherokee has 4 pin connector Trailer: Aluma 7712H with factory axles Aluma says 3500 lb rated at 2990 lb EZ lube. Axle has 4 hole square mounting flange and 14 inch wheels with 5 on 4.5 lugs. What parts do you recommend? Here is what I have in my cart so far: BIK-00 2 nuts and lock washers 84546UC3-EZ 2 hub and drum 23-26-27 1 brake kit 90195 1 P3 brake controller ETBC7 1 controller install kit HS381-9000 1 trailer wiring kit 20400 1 breakaway kit BP10-220 1 plugs Any help would be greatly appreciated.
asked by: Charles R
Expert Reply:
Starting with your Cherokee, the Prodigy P3 trailer brake controller # 90195 is an excellent choice. This is a superb controller both for performance and reliability.
In your 4-pole equipped Jeep vehicle you will hard wire the P3 using the # ETBC7 installation kit. These two items will provide a complete 7-way wiring setup that will generate and deliver trailer brake power to the 7-way socket included in the kit along with all of the required trailer lighting signals. I linked both a helpful article and an installation video to assist.
As for the trailer side, I also linked for you an article that provides an overview of all considerations for adding electric drum brakes to a trailer. Since you already have 4-bolt brake flanges you do not need to add these.
I recommend 3500-lb-rated self-adjusting brakes # AKEBRK-35-SA which will fit your flanges and your 14-inch wheels. You can use Mounting Hardware kit # BRKH10B.
You will need 10 x 2-1/4-inch hub/drums that use the same bearings as your existing hubs. The new hub/drums have to use the same bearings in order for them to fit properly on your spindles. You will want to pull one hub and take note of the inner and outer bearing part numbers. The most common bearings in hubs for 3500-lb axles are inner bearing # L68149 and outer bearing # L44649. The grease seal used with these bearings is usually # 58846. Once you know your bearing and seals parts you can choose a 10-inch hub/drum to match; in this instance I suggest # AKHD-545-35-EZ-K.
A trailer wiring junction box # HS381-9000 that you mentioned will be needed for the trailer for connection of the lights and electric brakes and the breakaway kit # 20400 will complete the setup.
Do please note that since the trailer is aluminum (which does make for a great ground connection) you may also need to run individual ground wires from each light and brake directly to the junction box's ground terminal. You can use wire # 10-1-1.
Products Referenced in This Question
Hopkins Engager Push-To-Test Trailer Breakaway Kit with Built-In Battery Charger - Top Load
- Trailer Breakaway Kit
- Kit with Charger
- Top Load
- Single-axle
- Tandem-axle
- LED Tester
- Hopkins
more information >
Grease Seal - Double Lip - ID 1.719" / OD 2.565" - for 3,500-lb Axles
- Trailer Bearings Races Seals Caps
- Seals
- Grease Seals - Double Lip
- 1.719 Inch I.D.
- 2.565 Inch O.D.
- etrailer
more information >
etrailer Electric Trailer Brakes - Self-Adjusting - 10" - Left/Right Hand Assemblies - 3.5K
- Trailer Brakes
- Electric Drum Brakes
- Standard Grade
- Self Adjust
- 10 x 2-1/4 Inch Drum
- 3500 lbs Axle
- etrailer
more information >
Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles - 10" - 5 on 4-1/2 - Pre-Greased
- Trailer Hubs and Drums
- Hub with Integrated Drum
- Easy Grease
- EZ Lube
- Pre-Greased
- L68149
- L44649
- For 3500 lbs Axles
- 1/2 Inch Stud
- 5 on 4-1/2 Inch
- 13 Inch Wheel
- 14 Inch Wheel
- 14-1/2 Inch Wheel
- 15 Inch Wheel
- etrailer
more information >
Mounting Hardware for 10" Brake Assemblies
- Accessories and Parts
- Trailer Brakes
- Electric Drum Brakes
- Hydraulic Drum Brakes
- Hardware
- 10 Inch
- Redline
more information >
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
Wiring Kit for Hydrastar Electric Over Hydraulic Actuators
- Accessories and Parts
- Brake Actuator
- Disc Brakes
- Hydraulic Drum Brakes
- Wiring
- Hydrastar
more information >
Replacement Trailer Hub Bearing - L44649
- Trailer Bearings Races Seals Caps
- Bearings
- Standard Bearings
- 1.063 Inch I.D.
- Bearing L44649
- Race L44610
- 3500 lbs Axle
- etrailer
more information >
Replacement Trailer Hub Bearing - L68149
- Trailer Bearings Races Seals Caps
- Bearings
- Standard Bearings
- 1.378 Inch I.D.
- Bearing L68149
- Race L68111
- 3500 lbs Axle
- etrailer
more information >
Product Page this Question was Asked From
Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LCD Display
- Up to 360 Degrees
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Brake Controller Installation: Starting from Scratch
- Article: Trailer Wiring Diagrams
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Installing an Electric Brake Controller on 2007-2013 GM Full-Size Truck or 2007-Present GM SUV
- Article: How to Measure for Trailer Hitch Drop
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Q&A: Does the Tekonsha P3 Trailer Brake Controller Turn Off or Stay On All the Time
- Q&A: Parts Needed To Install A Brake Controller On A 2023 Freightliner Cascadia
- Q&A: Suspension Enhancement Recommendation for 2019 Toyota RAV4
- Q&A: Parts Needed to Add 7-Way & Brake Controller on 2023 Kia Sportage
- Q&A: My Vehicle has a 4-Pin Trailer Plug, but Trailer has 7-Pin Trailer Plug
- Q&A: Comparison of Tekonsha Prodigy P3 and Primus IQ Brake Controllers