Your pace arrow has a power gear hydraulic system.
The fluid reservoir has a float switch, when all the fluid has returned to the reservoir (all jacks are all the way up) the float floats and the jacks down light goes off.
The level needs to be all the way up, as in running out the fill port.
On our 2000 PA, the pump and reservoir were behind the batteries, pass side compartment in front of the door. Stone beetch to get at.