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BRAKE wire on a motor controller

Recenter I got one of this motor controller. The yellow and black wires are for BRAKE as they described. How doe s this BRAKE wires work? Should I connect yellow to one of digital pin and black goes to Ground? anyone knows what's the function of this wire?

I am guess if signal "1" send to yellow the motor stop even throttle is full? and signal "0" to release it? or I am totally wrong here?

FYI: This controller is 48V 1000W and thick red wire goes to battery and motor positive. Black thick wire goes to motor and thick blue goes to battery negative.

The 3 wire bundle goes to throttle with 5V on arduino.

I bought this from Ebay with no much information for this controller:

 

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The brake connection might be for a brake solenoid (i.e. parking brake).

Put a multimeter across the yellow & black leads and see what you get out when throttle is 0, and then when throttle is >0.

Will try this too. So if it's for brake solenoid then it basically just an ON/OFF switch I guess?

BTW, Tilter is an ass kicking project!! Hope someday I know how to use these balancing sensors.

Actually it was working on Tilter that made think of the brake solenoid idea. Tilter's hub motors are 24V but they originally had 12V brake solenoids that had to be powered whenever the wheels were moving.
Rather than having a manual brake release, some motor controllers automatically send power to the brakes to release them a few microseconds before starting the motors, and then shortly after the throttle drops to 0 they let the brakes go again.

http://www.electricscooterparts.com/hookup/SPD-481000Bwiring.htm It looks like it may be similar to your hardware.

Thanks for this image. Now I know it's OPTIONAL. Doesn't have to connect it.

Wiper motors has an brake input using the priciple of regenerative braking. More infos here:

http://what-when-how.com/automobile/windscreen-wipers-and-washers-automobile/

But I have no idea, what kind of signal the Brake signal looks like

Thanks! I'm gonna give it a try. I will connect the black to arduino ground and yellow to digital pin just like a switch and see if it works.

(Some body stop me if I am totally stupid to try this.)