I do not remember the details of how I did this, so you need to check about getting the panel off. But I seem to recall some difficulties with the thin grey plastic sheet that the level lights are fixed into, which is attached to the face of the black plastic panel itself. What I can't remember is if there were screws somewhere or if the panel is just clipped on so it can be (gently!) pried off. What I do remember is that, in the process, I separated that thin plastic sheet a little bit so I think if you are not careful it could become detached and I doubt that is repairable. Maybe you can ask Mobilife RV about how to get the panel out to change the switch.