Took off outdoor house lights - they were never updated - still old cloth covered wiring - but in good condition. After removing old fixtures, I realized, the wires were not labeled - they are both just black cloth over it.
I connected the wires anyway, based on recolleciton, and the lights worked fine.
However, is there a way to test if I have positive to positive, and negative to negative? I assume the lights would NOT work if I had the wiring backwards?
Thanks in advance for any insight.