hi guys another prob on this vectra I just bought took the radio out tonight to check the wiring see if my mp3 player would slot in (it doesn't) didn't realise the block wiring into the cage so it instantly disconnected the radio now it says SAFE when I switch it on waiting for a code I presume the code is written on the radio body (I think its the code a four digit number) but I have no clue about the procedure for entering it nothing seems to budge the safe message to allow code input its a Phillips 400 radio cassette that's installed at present if anyone can help with the required procedure I would greatly appreciate it