Russel is correct in color of tubes. The xtra pressure tube could possibly be used for the optional side bolsters (different lumbar switch). The picture looks like the universal replacement pump, but why all the crimps & splices. They had two pumps with and without headrests, and then the rods were eliminated. The final is a universal and requires a hose kit.
There also was a change ( service note 93/94) where the handle was moved from the locking pump to the closing pump. this required shorting out a switch, redo on the hoses and changing the lock. The 95 version also handled the lid release, with another solenoid in the line...
The pump basicly has a motor that runs forward and backward, the output is routed thru solenoids to whatever source needs it, the valves are controlled by microswitches, or electrical diaphrams that start or turn off the pump. The whole system is also controlled by safeties, and timers.