The two slider pins holding the pads that you remove are easy to find as they have rubber dust caps on them. Torque to 22lbs.
New brake sensors at the pad end are coated with plastic, if the pad has not worn down enough that it has started wearing off the plastic then you do not need to replace the cable or reset the service.
Before doing this go out and pick up some brake fluid, check the brake fluid cap, it will tell you what it needs, mine is p21s. Suction out the fluid reservoir before squeezing the pistons back in then suction it again after pushing the pistons in, fill the reservoir back up with fresh then bleed the brakes after you change the pads.