You need a deep well socket, not necessary the rachet handle, just the socket. I believe the correct size is 1/4 “, but maybe 3/16. There are 4 long screws run through the glass of the console that screw in the back of the unit. Use the deep well socket as an extension of your fingers to remove the nuts. You will also have flat washers and star washers on each one. I used a plastic putty knife to break the silicone sealer. The the nuts off, the seal broken, just diconnet the wires at the rear of the unit (they bayonet twist off) and the unit will pop out. Mike Whitten/Germantown, TN