HSE Stereo Help (Diagram)

Hi All

Wondering if anybody has a wiring diagram for the wiring for Harmon Kardon with amp in a 55plate HSE? I have search the forum and can't find it.
It has started doing odd things (intermittent speakers not working (different ones each time)

Thanks for your help guys.

Tony

I do not have the wiring diagram but have the same car and before I had it from main steelers they had to change the wiring in the doors because it had corroded .as it is a cheep Chinese job wiring , just try and clean the ends up on the wiring to the speakers but I was not going to say no to new wiring

Is there any chance you came up with an answer? I have been looking to upgrade my head unit but currently cannot get my speakers to work with it.
Alan