Sorted at last. Know my Rs turbo inside out now. And found the battery drain was caused by the yellow relay in fuse box. One nearest inner wing(no.6) . What it was though and not sure how long this has been going on for( probably since I got it) but the two yellow relays in fuse box are different. And they were in wrong place. Been swapped round. They both fit in but just in wrong place. Swapped them round and sorted. 👍 Easy. So anybody need any help. Just send me a msg 👍😂