Golf VR6 Low coolant warning light flashing

[euroslap]

Of course, you are right my friend. i have tried to trace the route without success, having said that, i have also done a complete engine swap on my car, and it is still doing the same thing! i'm wondering if it is an electrical fault somewhere down the line?

In this case it's almost certainly a wiring fault, I'd trace the wiring back from the bottle sensor and try and find a pinched or shorted out wire as you've pretty well eliminated everything else.