Here is a link that has some good discussion of the fusible links and their function. Wits End has them new if you want to buy them and am sure your local toyota dealer could get them too if you want to go that route. On the 3rd or 4th page you can see what they look like but they are in their packaging still.
forum.ih8mud.com
With the shortage of fusible links...
forum.ih8mud.com