Locate the connector for the playfield harness at the left lower side of the playfield. Run the black wire through the middle cable clip, and then down with the power harness (thickest, through the slit hose and up into the head. It might be easier to connect the black wire in the head, and then drop the harness through the hole. Screw the black wire under the grounding stud in the head
The red green and white wires go to the right side of the playfield, then up through the cable clips to the level of the target bank.