hi...is it possible to wire up 2 doorbells off one transformer..i have a bell on a friedland 1amp 8v transformer but want to add another bell on the first floor...ive been told i can add another on the same transformer by wiring in the second bell directly to the first bell with the wires going in the same positions on the second bell...there are 4 terminals on the bell unit...0,1,2,3...or my other more expensive option is to get a 2amp 8v transformer, so my question is really can i use the cheaper option to wire it from the existing transformer or will it not work?..thanks in advance..