Locate the smaller, secondary part of the grommet.

Using needle nose pliers, gently sqeeze on the secondary part of the grommet and the opposite side of the grommet while pushing the grommet through the hole towards the exterior side of the panel.

Once pushed through the hole, the grommet can be removed from the wires and set aside.

The smaller, secondary part of the grommet is connected to the main part of the grommet by a thin piece of plastic, ensure this piece is not severed during this process.