I have installed the new secondhand fusebox and while checking the connectors I found that 407s suggestion about the connector on top of the engine, was right, the bottom half and parts of the red locking clip were gone which allowed the connection to slip apart. I have used liquid gasket gel to the lower part to stop it moving backwards when joining the two halves together, hopefully when I reconect the two halves (tomorrow) my problem will be fixed.
Thanks to all who offered their advice. Happy motoring!!!
Thanks to all who offered their advice. Happy motoring!!!