Problem sorted!! To put this thred to bed it appears it was a 'comedy of errors'. When I originally posted, I said that all the instrument cluster was flashing, well it must have been because a few things failed simultaneously as mad as it sounds. So all the problems must have made the instrument cluster have a mental breakdown! To fill you's in. 1 the lights working opposite to each other, Broken earth. (Things discovered today) 2 coolant level sensor was coolant logged, the coolant level sensor must have come slightly loose as coolant was coming up from around the sensor causing it to short. 3 oil pressure sensor (cylinder head) was'nt plugged, cut away at that plastic crap what surrounds the wires to discover where they join another part of the loom the wire had broken, not completly but enough for it not to send a signal back. And the problem with the instrument cluster dieing when the lights were on appears to have cured itself now all the other little problems are now sorted. Wahoo! There is one thing left tho, the suggestion of checking all the earth straps, well I did and I've found one not connected. Its connected to the body just under the scuttle tray on the passenger side, but where does it go to?