![]() This is because manually adjusted brakes, if not adjusted regularly, are not being used to there potential and the shoes wear slower. This means they may not last as long as manually adjusted breaks. It is important to keep in mind that FSA brakes are automatically adjusted to perform at their best. Problems will occur if one side of the trailer is adjusting automatically and brakes on the other side are not.Ī final thought about FSA brakes assemblies. It is NOT RECOMMENDED to run both types of brakes on the same trailer (different axles) but if the brakes on each axle match, it is operable. 6-pin trailer wiring introduces two new functions, a wire for connecting trailer brakes and a wire for +12-volt auxiliary power. If you're looking to replace the wiring on your trailer, check out our trailer rewiring guide. It is NOT SAFE to run both types of brakes on the same axle. Complete with a color coded trailer wiring diagram of each plug type, this guide walks through each available solution, including custom wiring, splice-in wiring and replacement wiring. On a Manual adjusted brake assembly (shown to the right) it will be a curved spring below the adjuster.ĭue to the way that these brakes operate we absolutely recommend being consistent through the trailer. On an FSA brake assembly (shown above) the spring will be straight and wrapped around the adjuster. The manual adjusting brake will not have this wire running across the inside of the assembly.Īnother way to identify between the two is the bottom spring. On the 1 o’clock side it will have a banjo looking fitting (shown to the left). The FSA brakes will have a wire that will run from about 9 o’clock to 1 o’clock. This cannot simply be done by looking for a star adjuster because both types have that. It is important to be able to identify which type is already on your trailer so that maintenance or replacing is done correctly. Due to the reduction of required maintenance, the FSA brakes are becoming a lot more popular. Manual brakes must be adjusted manually via the star adjuster on the back side of the brake assembly as needed. ![]() From 4 pin flat to 7 way round connectors. The difference between the two is that the forward self-adjusting brakes will adjust themselves as needed so that they are always at the optimum position. Trailer Wiring Diagrams showing you the typical wiring for most single axle trailer and tandem axle trailers. The two main types of ELECTRIC BRAKE ASSEMBLIES for axles 7K and below are Forward Self Adjusting (FSA) and Manual adjusting. CLICK HERE to shop for Electric Trailer Brakes and Brake Parts
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