Hopkins Trailer Breakaway Kit - Kit with Charger - 20400 Review Video

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…

Wheel bolt patterns are defined by two numbers: the first being the number of lug nuts and the second being the diameter of the circle the lug nuts are arranged in. So a 5 on 4-1/2 bolt pattern is 5 lugs arranged in a circle that is 4-1/2 inches in…

The Dexter Zinc-Plated Brake Actuator #T47457007K does not have an access hole to insert a screwdriver to bleed the master cylinder. You will have to use the old method with a 2x4 and the safety chains. While the trailer is disconnected from the…

A #84 spindle is the standard 3,500 lb axle spindle. It uses an inner bearing L68149 (1.378" inner diameter), and an outer bearing L44649 (1.063" inner diameter). These days this is basically universal for 3,500 lb axles. What you have with…

If you are picking out springs for a fabbed up trailer I would go with the more common leaf spring lengths as that will make picking out replacements in future a little easier. For 3,500 lb axles the most common length would be 25-1/8 inches like the…

Thank you for all of the photos and information! From what I can see it looks like you have a #84 spindle but that inner bearing blew out so you should be able to remove that inner sleeve that looks like it's still on the spindle (next to where…

For the clearance light part #AL91RB we have the grommet part #A91GB which is basically a hard rubber.

The internal dimensions of the Curt Battery Box part #C52022 are 5-3/4 L x 3 W x 5-1/8 without lid.

The Trailer Axle with Electric Brakes part #e75SR doesn't come setup for overslung applications. That said, all you would need for this is the Dexter Trailer Springs Over-Under Conversion Kit part #K71-385-00. The axle has a slight bow to it…

See the picture to the right for a wiring diagram of seven-way vehicle end trailer connector. If you click on it you can enlarge it. I have also included a trailer wiring FAQ page for you to check out.

It actually sounds like something may be loose in the brake drum somewhere. If you have taken the wheel and hub off and nothing is obvious, I recommend adjusting the brakes manually as shown in the attached video. If you adjust the brakes and still…

For the tire size ST225/75-15 in the Load Range D like the part #274-000029 the weight capacity is 2,540 lbs at 65 psi. Which with just four of these you'd be over the 10k GVWR of the trailer you mentioned so you should be fine.