Audio Issues

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) and also removed both door cards to check for loose wiring.

It's a factory stereo and same with the speakers.
Its driving me nuts.
Thanks in advance