If you look on the backside of the climate control unit in the dash you will find a glass buss style fuse. It will be blown. Replace the fuse and your fan will stay on with your headlights.
There are a couple of different times when you'd turn off your headlights. You'd turn off your headlights when the car is off for example.
The headlights "turn out" at night when it is below 45 degrees and the car is not warmed up yet after the blinker "resets" to center when making a turn after about 78K miles. This is a power surge problem with the high beam function of the blinker arm that shuts the ballast off just long enough to loose one or both headlights. You can turn them off for one full second and back on they will be fine until the next turn or when the motor comes up to normal operating temperature.
Check for a heater flow valve in the heater hose they can rust shut easily it is a valve in the heater hose that opens when you turn on the heat and shuts when its not in use, if not then probably the core is plugged a radiator flush might help but you may need to have it cleaned and repaired.
A car that shuts off when the turn signal is used indicates a major short in the electrical system. When the turn signal is used, it cause a massive draw on the power and shuts it down.
headlights and dash lights in 2001 sunfire wont turn on.
Assuming yours is a mid-late 80's model, the switch is on the left side of the steering column, next to the heater vent.
Headlights not working
do the headlights come on automatically or manually, if manually turn off
You have to go to the dealer and ask them to turn them off, otherwise they leave them on as running headlights. They will do this for free.
Correct
how do i turn off the headlights of my toyota 4 runner 2000 while the car is off?
Find the headlight switch. It is located on the far LH end of the dashboard just under the top of the dash. Turn all the way clockwise to turn on the headlights. Or you can turn all the way counterclockwise and the headlights will turn on automatically when it gets dark.