You will lose the functionality of speaker switching if you use this jack.
To install it, you need to enlarge the hole in the chassis and add the holes for the mounting screws. The Neutrik locking jack (the jack we provide is also a Neutrik jack) has T, R, and S terminals. T is the left channel hot, R is the right channel hot, and S is ground. TRS is Tip Ring Sleeve, and the stock jack is sleeve by the chassis, then the ring is the middle two terminals (vertically), then tip is the pair of terminal furthest from the chassis.
-PB