How to see light source

I was creating a highway scene and i used ctrl L to turn it to night time and for some reason i cant see anything at all i knows its night time but in real life at night you can still see but im not sure whats the light source and also i cant see the source of the light from the street lamp normally its very bright where the street light source is but for some reason i cant see it at all what setting do i change in the light settings or whatever i have to change to see the light source and it is a spot light if that helps