Right so finally sorted my rear speaker pod problem and did what my mate does with everything. Tec screwed them onto the pods. Fitted perfect, connected them up etc and only one would work. Can't get any sound through the rear right door. Definately the wiring since we tested the other speaker. So we did a temporary work around, drilled a small hole for speaker wire to go into the car, hid it under the trims and then connected it to the amp in my boot. Now when you try and turn the headunit up it will get to about 30 and cut out completely until the volume is turned down.
So questions are...
1. What could we have done to the wiring in the door?
2. Why is are the speakers cutting out above a certain volume?