The previous latch was visibly worn (about 8 years old). Unscrewed most of the Torx screws inside the door, except the bottom ones which I loosened - I didn't want to the whole front panel to come off. Pulled out the old latch, disconnected its plug, replaced with the new latch - I didn't change the metal tab. Hand tightened the Torx screws, confirmed the door latched properly, and the dishwasher was up and running again.