Variants of a mold are catalogued separately, so each one has its own sets and minifigs. Check these too if something you expect is missing here.

• 5306b Wire with Brick 2 x 2 x 2/3 Pair [Undetermined Length] this part is a alternate of it
• 6626 Plate Special, 2 x 2 Bottom of 9V Cable Connector Sub-part of this part