I was wondering if the airlines that go to my transmission just control the poppet valve? I will be replacing the transfer case in my xm818 and putting an air switch in the dash so I won't need the poppet valve anymore. I would like to remove the airlines from the transmission just wasn't sure if they were there for any other reason. Also in the T-1138 transfer case other then the airline to activate it does it need any other air connections? Replumbing my whole truck air system, brakes, fuel..... so just trying to plan out what I need and what I can eliminate just trying to keep it stupid simple the less I have the more I like it. Thanks.