18 speed air line help

I got a 18 speed eaton in my kenworth and I wanted to put 2 of those old style air plungers on instead of the normal shift knob but the 18 speed only has 3 airlines so wondering how I would need to run the airlines to have one plunger for hi/low and one for splitter

 

Thanks bud.. I thought that but wanted to make sure before I took things apart

 

Not quite lol not enough room in a narrow cab kenworth for that haha... just want to old school look with the plungers

 

Do I have to switch them on the trans or just flip them on the range.valve on the stick?

 

Appreciate the help bud