3k wire was a small component necessary for the operation of a transport pod.
When John Crichton, Ka D'Argo, Jool, and Chiana were aboard a damaged transport pod that docked with the leviathan Rovhu, D'Argo noted that they would need to find 3k wiring and narium coils to get the pod operational again. Shortly after discovering the wiring, they discovered that the ship was diseased. ("Eat Me")