If your dash is not lighting up at night it could be a number of problems
What's wrong with my Mercedes?
Sometimes the fix can be real simple and real cheap.
Tail lights we are talking all models from 1960s to Mid 1990's - Fog lights only on those with removable lenses.
Knowing what bulbs you need and how to get to them is the key!
If your car has the old style sealed beam headlights there is a great solution!