mk1 vts fan signal

[adzvtr]

just wandering where the fan takes its temp signal from,
which sensor does it use in order to make the fan come on at temp????

[lharrowing]

believe there is a blue plug at the top of the rad which it takes its temp from. if you face your car will be at the top right

[adzvtr]

the big one in the rad???
so its not from one in the thermostat housing??