Day off today. Checking hose connections inside the car. Took the rear seat out and looking along the pink hose... ( thinks ) I will just check the battery terminals while Im here...bl**dy H*ll..the earth terminal clamp is fractured completely. I can only assume it was being held in tension with the terminal post by the pressure of the earth flex. Drive to my local parts man with a mole grip holding it together. Silly question answered by £5 quids worth of better quality replacement ! Might be me, but the car seems to be going better than ever...what am I going to find next.....?