HardrfastrturboBF

Were can I down load a wiring diagram for a 2004 to 2007 XR6 turbo falcon can't find anything on the internet, the manuals I can get are bad for that information.

I have just turned my 07 BF ute turbo ,had a whole damaged car that I took motor box wiring and ECU from which made it easier. But now I have just learnt I should have swapped the BCM from the other vehicle ,I had to have a mechanic hook up to my ECU and have a program down loaded to make it all hook up right it is now going mint . NOW the only problem I have is I dont have a code for my radio so it wont turn on the AC and heater work but no display ,I can turn it on with a hack but only lasts 5 minutes then turns off . How do I find code or get it going.