I have an fairly old telephone junction box inside my house (which the cable from outside leads in to) There is a problem with a connection within the box, probably a broken wire/loose connection I think (I have checked obvious connections). When I move the wires in a certain direction I get a connection but not if I move them in the 'wrong' direction I'm pretty sure I have tracked down the problem to three orange wires that go into a small clear plastic junction box which is shaped like a rectangle with a circle in it. I can't get into this junction box without breaking it and so want to buy another one so I can go in and check the wires and then put them back in a junction box. I don't know what this type of junction box is called, can anyone tell me and also where I can buy one? Also if the problem turns out to be a broken wire what is the best way to go about fixing this?
Any help very gratefully received.