Caption: This picture shows the window location. Window marking can happen in any direction, you could start at the bottom of the cable and work up or work from the top end to the bottom. That is for labeling. For the wire selection process it is very important to start from the top end of the cable and work towards the bottom. The arrows in these photos point to the as-built position of the thermistor. So in this case in the photo, the window that will be cut in the cable will have the right side at the arrow. The left side will be 2 cm or so to the left.