UPDATE ON RADIO AND CLIMATE CONTROL NOT WORKING
AFTER CHECKING ALL THE FUSES, DISCONNECTING THE BATTERY AGAIN AND TAKING OFF RADIO FASCIA TO ENSURE RIBBON CONNECTOR NOT LOOSE.......
MY BROTHER FOUND THAT THERE IS A FUSE IN THE BACK OF THE RADIO UNIT, AND HEY PRESTO IT HAD BLOWN, NEW FUSE IN THAT AND EVERYTHING IS WORKING PERFECTLY.
i am so happy but amazed that after trawling through hundreds of posts on this site that no-one else even suggested that there was another fuse on the back of the radio.
so my advice to others is to check that fuse first.
thanks everyone for all the advice though
jackie