Temp gauge stopped working

[daily rotor]

Hi guys my temperature gauge on my dashboard has just stopped working. Clock,fuel,revs and speed gauges all still work..
im definitely not having any overheating issues, but would like to rectify it before that ever becomes a reality.
It has a temp gauge wired into the top of the radiator, wiring looks ok.
My guess is that i will need to replace that temp gauge on top of radiator.
any more experienced guys that would look elsewhere first?
suggestions appreciated thank you

P.s its an old series 2 with a stock 13b.

[spirit r]

It is the levelswitch for the warning buzzer not the temperature gauge you checked.
You will find the temperature gauge under the oilfilter. Good luck!

[daily rotor]

thanks man, c that is why i ask here!!
i automatically assumed it was the gadget sticking out the top of the radiator
going to suss it out now.

[daily rotor]

yes excellent work Sherlock (Spirit R)
geez it helps when u look in the right place.
wiring has clean snapped off, looks an easy repair even for a dumb ass like me.
probably happenned when i done 8,000rpm 1st to 2nd gear changes i keep telling myself not to do
i can relax again

[daily rotor]

so to educate myself further while the opportunity exists
that contraption in the top of radiator will sound an alarm if it gets too hot?
i fear i may have a broken an engine mount as well.
because one of the dizzy capacitators wiring seperated itself too (at least it done it at the connectors) and was easily plugged back in.
damn im really going to have to stop changing gears like that.
there is paint scrapped of the underside of bonnet too.

[ian65]

there are 3 sensors in total related to the cooling system. The one on top of the rad is coolant level.... if the level drops too low in the radiator it should illuminate a red light on the dash and also a warning chime.
The temperature gauge sender is the one that Thomas directed you to under the oil pressure switch.
There is a 3rd sensor on the water pump housing just by the thermostat housing.... this one sender a signal to the choke system to let it know when to switch off once the engine warms up.

[daily rotor]

Thanks Ian65 & Thomas (Spirit R)