bah you all emo. Worked it out
There are two looms at the back of the headunit
Small loom is for the back speakers which consists of;
Brown with silver tracer - Right Positive
Black with red stripe - Right Negative
Blue with silver tracer - Left Positive
Black with white stripe - Left Negative
So I searched for these colour wires on the amp connector as seen here
I then chopped them and wired directly to the new speakers.
The other end of the wires connect to the speakers are seen.
If you look in the above photo, you can see the factory speaker connector hanging to the right. If you peel back the plastic you can see the colour of the wiring. (in the photo there is a green wire for the negative)
This green wire + the others are also located on the amp connector which I chopped into. So if you are going to use the factory speaker connector, you can just bridge the wires on the amp plug instead of running new wiring as I did.
I only ran the new wiring as the factory speaker connector would not reach my new speakers etc
Dont mind the dodgy wiring, photos were taking during testing, everything cleaned up
Hope that helps anyone with non-working rear speakers