Classic/Antique Car Repair: 94chevy caprice classic keeps shuting off, caprice classic, chevy car

Question
my 94chevy caprice classic shuts off when i turn the headlights, turn signals, reverse or brake lights on. It drives perfect until i have to use one of these lights then it just shuts off

Answer
I'm sorry but I don't know anything about your Chevy.  I am a Model A guy.  There could be a short in one o, or all of the light circuits.  Look at the circuit that feed all of these lights if you can find it.  Find a chevy car club and join it.  They will have all the answers and help you fix it.  Get a service manual for your car and look through it.  You may have a circuit breaker instead of a fuse.  Your system could detect the short and do an automatic shut-down.  Find the lamp fueses and start pulling them.  Try to keep the engine running after you pull each fuse and then turn on the lights.
Good luck.  Sorry I could not help you.
jack