If its the same as mine, you simply slide back the rubber boot, and press in the locking part of the connector and pull down. The connector should easily slide out of the box....let me rephrase that my concern is the wireing going threw the wall not the actuall controller
That is just a gromet holding the harness to the wall. Just start pushing around the edge of the rubber until you poke it through to the back side.If its the same as mine, you simply slide back the rubber boot, and press in the locking part of the connector and pull down. The connector should easily slide out of the box....