When replacing rear brakes on newer cars and trucks with electric parking brakes you must retract the brake piston by using a

scanner or manually take apart the motor assembly and then retract the piston.  

Using the EBR (electronic brake retractor) Simply disconnect the pigtail connector wire on back of the

electric parking brake motor located on the brake caliper. Connect the wires on the EBR to the terminals

of the electric motor. Simply push and hold the toggle switch on the EBR for about 30 seconds, then you can

now manually push the brake piston in. If the brake piston does not retract, the EBR is equipped with a reverse 

polarity switch and you may push the toggle switch in the opposite direction. https://www.youtube.com/watch?v=PwawuJ5eGNI

The EBR is powered by a 9 volt battery and is included with the unit. Every unit is tested before being shipped.

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