My current 4 button Pentair Spa Command (spa-side) switch (which is about 7 years old) has been slowly malfunctioning and is now completely inoperative. I understand it's common that these Pentair Spa Command switches go bad after a few years. A search online has revealed that replacement switches come with the wiring in various lengths.
My question: As I already have an existing Pentair Spa Command switch installed in my in-ground spa, can I simply just replace the switch by connecting it to the existing installed wiring or do I need to install the new switch and new wiring as an assembly? I would like to avoid re-running the new wiring underground all the way back to my Intellitouch control panel if I can avoid it.