light

I wonder if anybody can tell me what the redlight is for under the dash
on a 405.the light lense is by the steering wheel about knee hight,there
is two wires coming from it but i have never took the trouble to follow
the wires to find out where they go.the car dos not have a tow bar and
never had.so i dont know what this red light is for.. any help please.
from chris Addlestone Surrey

 

i have 2 on mine one for the tow ball,wired up for and not fitted.and one
for a dummy alarm led.the proper alarm led is fitted as the lions eye on
the front badge.