One of your wh/yel wires goes in the sixth pin from the bottom...
The other one probably connected to one of those two wh/yel pins.
Usually when you have extra wires of the same color like that, they were either "looped" through the connector or two wires were crimped to the same pin.
Make sure the wh/yel wire that you already have in the harness (pin 2) is the one that comes from the AC transformer in the lower cabinet.