Thank you for responding to my post.
Yes, the two wires at the top of the image goes to the amplifier, that I am sure of because its labelled.
The six wires on the left connect to the three speakers. Two of which are mid-range drivers and the third is for a tweeter. I'm afraid I don't have a signal generator unless that's a fancy name I've not heard of before.
I'm happy to hear what you think on how I can test them without breaking them.