how and where to connect crystal for fix frequency to use multiple remote bells in sa

how and where to connect crystal for fix frequency to use multiple remote bells in same area

I don't have the fainest idea what you're on about?.

I'm guessing wireless doorbells. If they are purchased why are you trying to hack them, and if they're from a kit or schematic you should ask the manufacturer or the author. Crystals are non-polarized devices so it doesnn't matter which way you hook them up. Solder is the prefered method of attaching components to circuit board. In fact, like Ciarcia, solder is my favorite programming language.