front speakers

Howiye Lads? My front 2 speakers have kinda stopped working. I went around a corner and a wire must have got loose because sometimes the audio comes back on for a few seconds and then disappears again. I took out the head unit and wiggled all the wires ( I haven't any audio testing tools)...

A while back my front two speakers stopped producing sound. I'm fairly sure they both stopped at once or at least close to the same time. I already checked to see if the fade was shifted to the back speakers but it wasn't. I doubt it's two blown speakers at once. That seems to be pretty...