Brakes grabbing

MFL wrote:

JRscooby wrote:

MFL wrote:
Hey JR, this is a common issue, but normally takes at least a light touch of pedal, that can result with braking similar to pulling the pin. Very aggressive, tires chirp/maybe smoke. As Grit mentioned, turning the gain way down will help, but braking will be diminished.

It starts mostly intermittent, due to the wiring moving/bouncing inside the tube.

Quick fix..cut the wires going through tube, and run new cross wire outside the tube.

Sorry, I do not have enough info to tell the OP what the problem is.

Lol, you should have just stopped there, while you still were correct!!

Well, over the years I have made house payments going out to help the people that must get trailer lights working so they can leave. For the last 8 years I have maintained a fleet of lawn maintenance trailers. And all that time I have never seen a trailer that had more than 2 conductors going to the wheels. In every case, 1 is ground, the other gets power only when the brakes should be applied.
Now the OP can do what he wants, but the only way the wires inside the axle can cause a brake to lock at random is some cut and run new wire clown has put a hot wire inside the axle. Without power from somewhere contacting a wire that goes to the magnet, power will not apply the brake. It is possible a bad spring inside the drum could cause trouble, but much more likely a short where the brake wire is close to another wire that has power.
If the OP was having trouble with brakes not applying when should, I would suggest he check for voltage and ground every connection. If was good before going into axle, then nothing at wheel end, then and only then would I consider replacing, or less likely bypassing, the wire inside axle. (More likely, I would disconnect at each end, so could pull enough to make repair where wire goes thru housing. Wire inside the tube is pretty well protected) But for brake grabbing or coming on at random? Problem ain't in axle. And Cut and Run New will not solve the issue