Hi,
Can anyone help me, when I indicate left and put my foot on the brakes the indicator stops flashing and my fog light comes on ...... weird?
How can I fix this and is it a costly problem ?

Spanna x:worship:

what car is this on?

Regardless of which car, this weird kind of fault is usually due to poor earthing of the lights.
If you know how to find the earthing points and clean them up then give it a try. If not it shouldn't be expensive to get an auto-electrician or garage to fix.

Yes -- poor earthing or, sometimes, someone has managed to pop the wrong type of bulb in.