RE: Heavy duty on/off switch for zenoah 20
Cermark,MPI,Rcaccessory all sell the same good switch. Heavy duty wiring with a charge jack built in. As a bonus I can bind my JR 2.4 receivers through the charge jack. While you are installing the switch, paint the top of the slider and put a dot of paint on the ON symbol. For a quick check if the two dots are touching, you have left the switch on.