Set a red insulator on top of the pair of holes closest to the power entry module.
Put a red binding post in the right hole (closest to the power entry module) and a black in the left hole.
From the underside, slip on another red insulator. Make sure the posts are twisted until they lock into the slots to keep them from turning.
Slip a washer and nut over each binding post shaft and tighten. Thread a second nut over each post and tighten.