If you replace your hot tub control system with a newer model, it will probably use AMP plugs, and the old plugs on the pumps, blower, ozonator and light are not compatible. Luckily it is very easy to cut off the old plug and install a new one
All new Balboa and Waterway control systems use AMP plugs, as well as Gecko's Y-series.
Part numbers
Balboa : 40-1691
Basket 
