Locks won't work and Windows won't go down brought

see the diagrams for power windows+doors and fix it. God bless you

For the windows- Your windows lock switch is bad, For the locks- a fuse maybe? For the headlights, are the bulbs aftermarket?

Those are all really common symptoms of the alternator going bad on those cars. I would have it checked to make sure it's charging properly.

Does your car have child safety locks that locks and unlocks the windows located on the drivers door arm rest? If you do it could be in the wrong selection. This is a long shot.
Try putting Vaseline in the window welts sometime they dry and that makes the windows hard to move up and down.B. Campbell

I would expect to find a main wiring connector has some serious corrosion in it.
The fuses for those circuits would be in the fuse box in the engine compartment.
You could try running power direct to the driver's door switch to make the windows come down. Make sure you have a fuse or breaker in the line.

I couldn't find one for an 88 but they haven't changed much over the years and this should give you and idea of what your looking for

There are fuses for both windows and door locks, If fuses are good may be electrical problems

First check your fuses (Manual should have that location for the window fuses). Also do the other windows go down on the other side with the switch on the drivers door? And what else doesn't work ( Mirrors, Locks )?

Disable the window lock switch. Unless you can't roll them down from the driver's switch either: in that case you're probably dealing with a faulty master control switch in the driver's door - all the other switches for the windows and locks go through it.