Finding 8" wheels trailer brakes

[North Idaho Wolfman]

Most models have one brake in the rear, in order to have the front help in slowing the tractor 4 wheel drive needs to be engaged.

I believe that your tractor has one brake disk to control the rear wheels. You likely have a way to lock the rear wheels together.

Only the BX has one brake, all the rest have brakes on both rear axles.
The M's have brakes on the front too.

 

[North Idaho Wolfman]

My 2C:
Brakes (on the trailer) are not your solution, chains and maybe new tires are.

I do not believe a typical electric brake controller will work on a tractor well, most rely on inertia to activate and moderate the voltage to the brake circuit, you will not have much inertia for it to sense going 1MPH down an icy slope, so you'd have to manually control them. Locked up trailer wheels are not going to help you regain control anyway.

Get the traction on your brake axle situated, use 4wd, and you will have full control of both the tractor and the trailer in most all situations.

You can get brake controllers that do not rely on inertia.
And yes you would want one the doesn't require that to work.