Pictured is the Cabinet Harness 12V wire (GRY-RED) and GROUND (BLK) that can be utilized for a power connection.
Alternate view of 12V and GROUND Source lines.
GRY-RED line for 12V and BLK for GROUND shown in schematic. Harness location is under the right-hand flipper button.
Pinwoofer TM - ID § 48-501