[Richard]

Ok, good info.

You said before that you don’t hear the pump come on.

So, take the diagram of the of the solenoids and ensure all are wired correctly. While you are in that bay, disconnect the down pin or pin lock solenoid for the rear. That will avoid roof modification until you get this sorted out.

If the solenoids are wired correctly, then a deeper dive is required. You will need to dig out the HWH drawing of the internals in the silver control box. Using that diagram find the fuses for the rear. Keep in mind some of them are BEHIND the first layer of control boards. You can access by removing the tiny screws at the corner of the board. Check all the fuses.

Here is a painless and quick way to check blade style fuses. Set your voltmeter to ohms and to beep on continuity. Touch the probes together and check for a beep. Now look carefully at a blade fuse and you will see two metal tabs on the top. One probe on each tab and listen for the beep. You can check fuses really fast doing this without having to remove them.