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Hi, I'm Mike G and I'll be assisting you. What color are the house wires?
Do you have a 2 wire voltage tester. You'll need to identify which is the hot and which is the neutral to safely install the new fixture.
That will work. Test for a hot with the switch on. Identify the one that doesn't show voltage with white tape. Wire the fixture as required.
That's why a 2 wire tester is better. Non-contact testers sometimes pick up voltage by induction on ajoining wires. Need a 2 wire tester.
I suggest a Volt/Con type. It is all you'll ever need. Does voltage and continuity.