Install the speed/ABS sensor back into the housing on the rear wheel, using your T25 star (Torx) bit - torque is 8 Newton meters (70.81 inch pounds or 5.9 foot pounds). Route the wire up as it was before.
Take a moment to pump the rear brake pedal several times in short strokes, this will seat the pads against the rear disc. If you had the tire replaced, maybe you'd like to check the air pressure in the tire so it's at the desired level.
Finally, double check all your work and then ride off into the sunset!