[wepaddle4]

Well, it's working, but I'm not sure why.
I cleaned and re grounded, voltage was good at the wiring block.
Then checked supply air coming into the front compartment, air present coming in one line, wasn't making it past the first solenoid.
Came back out after dinner, turned the key to start again, and the ride system worked.
Tried the leveling system, works as well.
I suspect air wasn't being supplied from the back for the ride system, maybe the first solenoid was sticky for the level???

I think I'll pick up a couple of spares, this is likely to happen again.

Thanks for the tips, the ground was fairly corroded and I did mark the up / down valves for each side so at least a future issue will be easier to change out.

Scott