Dylan.M

Hi, I have recently brought a Ford galaxy 2004 with a dealer fitted multimedia system which doesn't work, it also has a after market radio installed (but also not working). The problem I have got is that the multimedia system doesn't work working doesn't power on... I have tested the 12V power socket and it is working fine. I have also looked at all the fuse in the fuse board underneath the drivers steering wheel and they are all good and not blown. when I have taken out the radio I saw a little yellow connector and was winding if that could do with it as I have heard that there are 3 wires that make it work: +12v constant power +12v from radio - Ground Can anyone tell me if this is the connector please or/and has anyone got a wiring diagram of the whole system as I cannot find one anywhere (online and on Auto data). I have attached some photos as well many thanks in advance, Dylan