Those are the replay level plugs. There should be a small piece of paper stapled to the side wall showing what 10,000 value (10,000 -
90,000) peg plugs into the hole for the 1,000's value (1,000 - 10,000). Tell him not to worry about them at all until the rest of the game is playable. You have to follow the glossy orange colored wire jumpers back to where they connect to a cloth wire to know what the actual color is on the chart.

All connectors from the bottom to the head will be along the lower portion of the head. If in doubt, match wire colors from the male pins to the female connectors below.