I am wondering what I need to do to get the view larger image link and jcarousel to display in the catalog page as well as the product detail page.
You are aware of the ramifications of putting a carousel in the catalog list page. What if the view changes from grid to list or list to compact list? You could override the image display for the catalog views, each time adding the code for the carousel … but I’d advise against it.
You can change the size of the thumbnail from “Administration” > “Settings” > “Thumbnails”.