How do i tell if my car stereo wires are still intact?

I bought a car from a friend (94 Honda Accord LX)...and his car stereo had previously been stolen. Like the question asks, how can i tell if the wires are good to go so i can get another head unit installed?How do i tell if my car stereo wires are still intact?
You should visually inspect them. Take the head unit out and have a look at the splice points and make sure they are secure. If not, cut, strip, and reconnect with either crimp connectors or solder and heatshrink and/or electrical tape.How do i tell if my car stereo wires are still intact?
Just check them with a voltmeter if not good just replace the harness which will fit that car