Hello Group. I'm just starting to dabble in Electronics at my ripe young age of 66 yrs. Ham & CB Radio operator for 40 yrs. Just need best location purchase the correct Illuminated rocker switches for my Pyramid Power supplies. The wording on the switch is Canal (M) B series. 10amp 250vac & 15amp 125vac. also need the correct POT for the voltage control as it is very erratic?? The pot says C5K on it? Any help would be appreciated! Thanks, Bernie Trudeau