Bdub, the second picture indicates standard hydraulics, the joy stick should have either two buttons or a thumb wheel but not both.
The aux hydraulics are operated directly by the aux ECM fitted below the floor plate. the aux hydraulics can operate in one of two modes
1/ if it has the buttons the circuits are on /off
2/if it has the thumb wheel the circuit is proportional and the hydraulic flow varies with thumb movement,
the configuration of the 2 modes is only done through Cat ET .if the configuration does not suit the type of joystick fitted. the aux hydraulics will not work
because the joysticks have been changed (I think) we don't know what the ECM has been calibrated for.
I don't want to scare you but the early ECM's were know to fail.
There are a few things we can try before condemning the ECM
1/ the Aux ECM is supplied power via relay C to fuse no 16 then to pin number one on the aux hydraulic ECM. if you are handy with a multimeter you can check this
2/ have you tried the aux hydraulics switch shown in different positions
3/ check power to the A1 and A2 solenoids .either using your multimeter or screw driver to check for magnetic attraction. To do this you need to raise the cab and operate the levers, how ever for the aux hydraulics to work this way you will have to bypass the interlock switch's which is
very, very dangerous . or have some one sit in the partially raised cab to operate the controls. only the thumb wheel can be operated at this point if you have power to the solenoids at this point you have a hydraulic issue, if not it could be the joystick mode.
4/ you can temporarily re wire the joy stick to use the switch's to see if this makes any difference. just follow the schematic below and change the switch wires to reflect the same position as the joystick schematic too the right
Mark