Is the power hookup under the existing sill plate?vega said:the sill plate is easy to remove and reinstall. start at the seam on the sill plate, put your fingers under the inside of the trim plate, and move them toward the front about 3" and gently lift up. you should feel the clip release. move toward the front about another 10" and repeat. lift the rear of the sill plate and it will come away from the front.
to replace it, put the trim on at the front, and then push down on 2 clip locations.