The brake line pressure sensor is located on the factory ABS module, and the data is sent to the ECU over the CAN bus.
According to VBOX (
http://www.racelogic.co.uk/_download...Teves-MK60.pdf) the MK60 doesn't send brake line pressure on the CAN bus, just wheel speed, brake light and ABS activation.
One option may be to use a g sensor (like in a GoPro) to get your braking data.