Okay, just kicking around some ideas tonight cause I'm bored. I know the picture looks elementary but will this work? If so will it work good? If it won't work then why not? It's late so if I'm way off base here be nice... lol
1 toggle switch for each solenoid.
1st solenoid pos 1: to first grainger
1st solenoid pos 2: to common barb on solenoid 2 which goes to G-valve#2.
2nd solenoid pos 2: to third G-valve.
Whatcha think?
Michael