Does the ground wire for my pool connect to the pumps?
All your pumps should have the #8 connected to them (bonding), as they can become energized and you don't want that using your pool for a ground. This is not a substitute for grounding the pump through the electrical wiring. You need both, per NEC 680.26


  (a) Double-Insulated Water Pump Motors. Where a double-insulated water-pump motor is installed, a solid 8 AWG copper conductor from the bonding grid shall be provided for a replacement motor.


The lights must also be bonded if they are in a metal enclosure. 


  (4) Underwater Metal Forming Shells. Metal forming shells and mounting brackets for luminaires and speakers shall be bonded to the equipotential grid.