Hi , sure this probably stupid , but .... Ok my home is 75 yrs old , my dining room light switch stopped working. Checked the light bulbs etc etc , then bought new switch. Old switch was ceramic and had no markings , kinda guessed on which wire was which on new switch. Turned power back on , no sparks or anything but no power either. Figured issue must be with the light fixture. Bought new fixture , installed it , breaker back on , and light lit up YAY (btw - old fixture did NOT light up even with new bulbs so some of the issue was there ) --- wall switch does nothing. Swapped wires on switch , still nothing. Any ideas??Oh , sorry , the wires in the wall and ceiling , black and gray , no red, white, green nothing like that. In ceiling i hooked up new fixture exactly like old - 2 black plus 1 new from fixture , 2 gray plus i new from fixture , 1 gray attached to nothing. In the wall , same 2 black connected to 1 single wire to switch , 2 gray connected to single wire to switch , no single gray wire present in wall. PLEASE HELP !!!!!!!!!!!!!!!!!