Can I Add Electric Brakes To A 1993 EZ Loader Boat Trailer

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Question:

I have a 1993 EZ Loader boat trailer with a 17 foot Larson boat. The trailer weighs 665 pounds and is a single axle. Can you please tell me which one of your electronic brake kits would be the best to install? Thank you.

asked by: Mike R

0

Expert Reply:

Hello Mike. It sounds like you are wanting to add electric brakes to your boat trailer that currently has no brakes. This is possible, but you will first need to make sure that your axle is equipped with a brake flange at the base of the spindle. The brake flange is necessary for adding brakes.

If you do have a brake flange, you will next need to determine your bearing sizes. Electric brakes will require new hubs and drum assemblies, and we need to be sure that there is a drum available that will work with your spindle. The best way to determine this is to pull a hub and remove the bearings. Each bearing should have a number stamped on the edge, and I can use this number to find compatible hubs.

For example, the typical 3,500 lb axle uses the # L68149 (1.378" inner diameter) inner bearing and the # L44649 (1.063" inner diameter) outer bearing. This will use the # AKHD-545-35-EZ-K hub and the # AKEBRK-35-SA brake kit. Please let me know your bearing sizes and I am happy to recommend parts for you.

You will also need a 7-way harness for the trailer such as part # H20044. You will need an emergency breakaway # 3802308. You will also need an electric trailer brake controller like the Tekonsha P3 # 90195 in your tow vehicle.

We have a guide for adding electric brakes to a trailer, and I have provided a link to this guide for you below. Feel free to reach out if I can be of further assistance.

expert reply by: Jesse M

0

Mike R.

8/8/2024

Thank you Jesse for your awesome help. I will gather the information and get back to you.

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Mike R.

8/9/2024

Hi Jesse. Yes, my boat trailer has a four hole brake flange. The inner bearing is L68149 and the outer bearing is L44649. I would appreciate it if you would recommend which parts I need to install brakes on my trailer that currently has no brakes. Thank you again.

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Jesse M.

8/12/2024

@MikeR Ok great thanks for confirming. Your axle does use the standard 3,500 lb bearing sizes. Here are the parts I recommend: - etrailer Electric Trailer Brakes - 10" - Left/Right Hand Assemblies - 3,500 lbs # AKEBRK-35 - Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles - 10" - 5 on 4-1/2 - Pre-Greased # AKHD-545-35-EZ-K - 7-Way Molded Trailer Wire Connector, 6' Long # H20044 - Trailer Wiring Junction Box - 7 Color Coded Terminals - ABS # 3375601101 - Bright Way Push-to-Test Trailer Breakaway Kit with 1-Amp Charger and 5 Ah Battery - Top Load # 3802308 You will need additional wire to run to the brakes, and for that you can use butt connectors # DW05745-10 and some 12-gauge wire such as part # 12-2-1 which is sold by the foot. You will need some ring terminals # 44-5310A as well. You will also need to make sure your tow vehicle is equipped with a 7-way and an electric trailer brake controller. The Tekonsha Prodigy P3 # 90195 is what I recommend. Refer to the article I linked below for helpful install tips and instructions. Let me know if there is anything else I can do.

Helpful Links

faq-adding-electric-drum-brakes.aspx

Reply

Mike R.

8/9/2024

P.S. to the message I sent just a minute ago. Our hub has five bolts, and they are 4 1/2 inches.

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Mike R.

1/9/2025

Hi Jesse. I am finally moving forward on my project. Can you please tell me if the hub assembly you recommend comes with one hub or two? I have a single axle trailer. Thanks so much.

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Jesse M.

1/13/2025

@MikeR The # AKHD-545-35-EZ-K hub I mentioned above comes with one single hub. Bearings, seals, races, lug nuts and grease cap are included too.

Reply

Mike R.

2/23/2025

Hi Jesse. I love the new electric brakes and have a quick question for you. I installed the Tow-Pro Liberty Electric Trailer Brake Controller. Set-up went well using your online instructions. However, I am not sure how to set it, which number to start with on the 1-10 scale. Can you please advise me on this? I appreciate all of the help you have given me.

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Jesse M.

2/24/2025

@MikeR So 1 will be the lowest amount of braking power, with 10 being the highest most aggressive braking. If you are just starting out I would start at 4 or 5 then see how that feels.

Reply

Mike R.

3/5/2025

Hi Jesse. I've finished installation of the electric brakes on my boat trailer, and they seem to be working well. I haven't adjusted the brakes, and they seem a little loose. I wasn't confident adjusting them on my own. Will they self-adjust as I drive it?

Reply

Jesse M.

3/5/2025

@MikeR Hey Mike. It is normal for brand new brakes and hubs to be weak at first. You need to go thru the bedding process. The break-in process applies to both manual adjusting and self-adjusting electric brakes. It's necessary to do this step when you install new brakes because it allows the brake shoes and magnet to seat into the drum. Drive the trailer out into an open area, like an empty parking lot. Get up to around 40 MPH and apply the manual override on your brake controller. Make sure the brake controller is set high enough where it will fully engage the trailer brakes (usually the middle setting will be just fine). Do not hit the brake pedal during this time, as you want to slow down your vehicle and trailer with only the trailer brakes. You’ll most likely have to do this about 20 to 30 times to properly seat the brakes. When you feel like your brakes are properly seated, pull over and check for signs that you're done: a bit of smoke is normal and your brakes should be very hot (brakes should read 350-400 degrees with a temperature gun). If you don't see these signs, then keep repeating the process until your brakes are properly seated.

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Answer 1

The closest modern tire size to a 7.00-15 tire is a 225-75-15 like the #AM10256 tire you mentioned. Typically, a 225/75-15 tire will measure about 8-3/4 to 9 inches wide by around 28-1/2 inches in diameter. We offer the same size in a Load Range E as…

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Answer 2

The 7.00-15LT tires you have on your 1978 Avion trailer have a 29.4" diameter, have a load range that should be in the 2,400 lb vicinity and fit wheels that are 5", 5-1/2" and 6". For comparable tires I recommend going with a…

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Answer 3

Your pictures didn't make it through, could you email them to me?

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Answer 4

Hi Rusty; the Dexter #84546UC3-EZ and etrailer #AKHD-5475-35-K will both fit a 3,500 lb axle but they have different bolt patterns. You already ordered the Dexter in the past so I'm assuming your wheels are 5 on 4-1/2. For the same bolt pattern…

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Answer 5

A trailer hub and brake drum should be able to be removed by just sliding off the spindle after the castle nut is removed. The castle nut is located underneath the grease cap. The trailer brake should not be activated. If the brake is locked that…

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Answer 6

Both the Tekonsha Breakaway Kit with Charger, #20020, and the Tekonsha Breakaway Kit with Charger, Clamp On, #2028, come with the same charger. The only difference is how each system mounts to the trailer. Break away batteries require a special…

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Answer 7

Electric brakes, like part #23-26-27, use 16 gauge wiring. However, we generally recommend using 10 gauge, like part #10-2-1, to connect to the brakes because of how far the wiring generally has to be run. So you need to use butt connectors large…

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Answer 8

The one piece of info I need from that pic is partially blocked by the bent plate. What is the full capacity number listed? With that I can see what we have that you'd need.

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Answer 9

Great question, William! The Karrier ST225/75R15 #KE63KV is a KR35 while the Karrier ST225/75R15 #AM10303 is a KR03 according to Kenda. There is a slight variation in the tread pattern and from what Kenda says about them it looks like the KR03 is…

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Answer 10

Since you already have a 4-way on your 2019 Nissan Frontier adding a 7-way is pretty simple. Using part #118267 gives you a 7-way but doesn't keep your 4-way. To keep the 4-way with the new 7-way you can use part #HM40975 instead of the connector…

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Answer 11

Switching from a hydraulic braking system to electric on a trailer is actually a lot less complicated than the other way around. You basically just need to lock out your surge brake actuator, swap out your brakes and hubs, and then add some wiring…

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Answer 12

I do have an option for you but we no longer carry 10 x 1-3/4" brake assemblies. I recommend upgrading to 10 x 2-1/4" brakes as this is the more common size for 3,500 lb axles and will provide greater stopping power. For a set of 10 x…

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Can I Add Electric Brakes To A 1993 EZ Loader Boat Trailer

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