Basic question - connect McIntosh integrated amp to LS360 speakers?

Hi, all. I have a very basic question. I inherited my dad's beloved McIntosh LS360 speakers, MA6850 integrated amplifier, and MCD7009 CD player and would like to sell them (too big for my little house). I need to test the speakers first, but I can't figure out how to connect the amplifier to the speakers (hey, I said it was a basic question!). My dad had Tributaries A2 silver OFHC audio interconnects, and the speakers have binding posts, but the interconnects won't plug into the binding posts. Do I need an adapter? Should I buy some basic speaker cable and use that instead? Or something?
If I can connect the amp and speakers, would I connect to the High or Low binding posts for the purpose of testing the speakers? (A few years ago, a retired McIntosh engineer cleaned, repaired, and tested the integrated amp, but he has moved away.)
Thanks so much for your patience and knowledge!