Wiring Diagram available? 2003 1.6i 16v NFU (petrol)

[marcrbarker]

Hi a newbie here.  I've got a 2003 1.6litre 16v petrol, I think it's engine TU5 JP4 NFU 

Has anyone got a link to  or can post wiring diagram pages for the engine and its anciliaries? including ECU and BSI

So I can diagnose the fault myself. Because all the mechanics do is keep replacing things according what they had read on the internet instead of testing anything first.