We have a Marco pump on Elyse and don't have it connected to the bonding system.
As I understand it the bonding system as far as pumps etc go is only applicable to those items in contact with salt water.
Regarding the 24V indicator panel light, we have the original wire connected to the red wire between the smart sensor and the pump.
The green light on the panel comes on when the pump cycles and goes off when it stops.
Our pump has been installed now for 2+ years and we have had no issues with it.