Engine Cooling Fan Bypass Switch

[DrasticplastiC]

Is it possible to fit an extra switch to fire up the rad cooling fans by connecting into the wiring in the passenger footwell?

What's the best wiring set up to fit a switch to override the temperature switch?

The views of knowledgeable enthusiasts would be appreciated.

[DrasticplastiC]

Thanks for your replies. To answer to one reply as to why an override switch is necessary, if the spade connector comes off or the temp switch fails as you head into a city in the Summer, it will hit 100°C and boil over before you can say bob's your uncle.