Thank you for your continued advice Richard & everyone.
The PCB I referred to is the small one behind the warning lamps, between the fuel & temp gauges. It would appear this has been redesigned although completely interchangeable with the original.
'You haven't mentioned if you checked the redundant wires to l/h drive position of brake master cylinder. These should be individually insulated and cable tied out of harms way.'
We'll have to check this when the car is up on the ramp.
Have to say I am completely out of my depth with this sort of thing!
A short drive yesterday, (after having the wheels off to give a good clean) & once again no sign of the lamp flickering!
