wife bought an old light fixture for kitchen with only black and green wires bonded with rubber sheathing. Do i simply cut and cap the white common wire from the house feed? Of course it has 5 lights and a plastic shell,will try to post pics
No - don't confuse old fixture colors with current wiring colors.
If your fixture only has 2 wires, then black to black, white to what's left.
Use a metal box and attach the ground to the box.