help with pingel air shifter

Long time no see everyone. I am dusting off the ole 77 KZ900. It is set up with a Pingel air shifter and engine cut out switch run off the horn button. It uses a DOT air tank thats good for several hundred shifts.Its currently not functioning. I need a simple 1 line diagram to follow to make sure everything is right. It also has a DRL rev limiter. Im 100 % sure it worked last time I rode it. Please help as the Pingel directions are pretty vague. 

This is the one to reference :
www.mpsracing.com/instructions/MPS/Air_Kill_Air_Shift.pdf

If you need a different one scroll back to instructions, there are a few on there.