Recommendation for Adding Electric Trailer Brakes to Trailer with 3,500 lb Axles & 5 on 5 Inch Hubs

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Question:

just wanted your recommendation on which brakes and drums would work best together? I have a 16 ft. trailer 3500 lb axles with 5 on 5 in wheels. I will need wiring also and what gauge will I need?

asked by: Tony T

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Expert Reply:

For your 3500 lb axles, I recommend starting with the Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies # AKEBRK-35-SA. These assemblies will self-adjust to ensure you have the best braking without needing to manually adjust them every few months.

Then for your 5 on 5 inch hubs, I recommend the Trailer Hub and Drum Assembly - 3,500-lb Axles - 10" Diameter - 5 on 5 # AKHD-550-35-K. If you have the spindles with the integrated grease zerk, then you will want # AKHD-550-35-EZ-K instead. Most 3,500 lb axles use the same bearings and seal, but you may want to double check to be sure yours match.

Then for your trailer wiring, I recommend the 10 gauge # 10-1-1 wire sold by the foot for your brake magnets. This is run from one side of the magnet to the junction box and then to the 7-way. The other wire on the magnet is grounded to your trailer frame. For the junction box and 7-way, I recommend the 7-Way Molded Trailer Plug with Junction Box # HS381-9000 using ring terminals # 44-5310A.

expert reply by: Jason S

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Answer 1

I've attached an article to help you with how to measure to determine your bolt pattern. With 3 inches on center, you have a 5 on 5 inch bolt pattern. The 5 on 5 bolt pattern is generally only found on 3500 lb axles. For a hub and drum…

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Answer 2

We have a few 5 on 5 inch hubs. They are all for 3,500 lb axles and have #L68149 inner bearing with 1.378 inch inner diameter and #L44649 outer bearings with 1.063 inner diameter. I've attached the link to the page of all your options which…

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Answer 3

There really isn't a particular maximum trailer weight that is used to determine when brakes need to be added to both axles of a tandem axle setup. While I do still recommend checking your local laws, I am also not aware of any general laws…

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Answer 4

I may have a solution for you, but currently there has not been a plug and play harness available to install a brake controller in a 2021 Honda Ridgeline RTL; I do know that the 2021 Pilot and Passport are still using the same brake controller plug…

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Answer 5

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 6

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 7

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 8

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Answer 9

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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Answer 10

Hey Richard, thanks for reaching out! The Dexter DX7.5 Drop-N-Go Brake Actuator #099-175-00 is a great option for a replacement actuator because it's a direct replacement for the common Model 60 actuators that were popular in the '90s.…

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Answer 11

Traditionally, trailer manufacturers did not use electric brakes on boat trailers because the brake magnet wiring and trailer wiring did not always have the best insulation or water protection. These days, more and more manufacturers are using…

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Answer 12

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Recommendation for Adding Electric Trailer Brakes to Trailer with 3,500 lb Axles & 5 on 5 Inch Hubs

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