[Richard]

Yes I mean to somehow provide 12v power to the solenoids. There are numerous ways of doing this. but first put a steel washer to the solenoid to make sure you don’t have power.

Second, I have see two coaches in the last year that would not lift the rear simply
Because the air system was not putting out a high enough pressure. Both coaches needed about 125 to
Lift the rear. The situation was compounded because the guage in the rear compartment was reading low. Put a new gauge on a quick disconnect fitting and plug into the air port to confirm you have the pressure that you think you have