Chris, Thanks for the input, simplest thing I could do that I haven't, is to unplug the knock sensors and see what happens, yet I need to get up-to-speed with the Laptop part of the equation.
I have found an error with the electric fan circuit, the thermostat is switching a positive relay signal.
I can't see how that could be the problem, but suspicious of temperature related devices, first chance I get will rewire it anyway and whilst the dash is out there are a few other things on a minor priority list I can do whilst in there.
The radio hasn't worked for the previous 18 months, yet my ears have been tuned either into the Test Channel or listening to the Supercharger Song.