Well I could try to walk you through how to do a continuity test, but not knowing what meter you’ve got or having it in front of me to look at, it would probably be easiest to ask a buddy who knows his way around DC electricity for some help to perform the test...
What you are looking for is confirmation that the flow of current through those wires is reaching from the MPEM to the buzzer itself. Your meter should have the ability to do that, but it’s probably best if you have someone run through how to do it in person...