Air beak stop/tail switch.. No air after cab swap

[rtayl328]

Hello All,

2007 Pete 386 with C-15 Twin

I have been down for a while.. (Short Brief)

April 14th I was driving down 331 near Opp, Al when a tree that was cut but left entangled in other tree's, by someone cutting tree's, fell and went through my cab..

It destroyed the hood and cab.

Left Opp, Al 36 hours later and went to Dallas to pick up cab and hood..

I did a cab swap that was wired for a Cummins to my truck a wired for a Cat.. Harnesses and all,, done, good got it.!. non-stop by myself sun up to sundown 7 days a week.. As a O/O I was already wore out..

Anyhow,
So, here is the problem I am having.. (I'm so tired I can't see the solution clearly)

I have no break lights.. I've changed switches, relays, fuses and so on... After two days of carrying on, I finally pulled the dang air line and pushed the pedal to check for air... (SMH) I know, yes, 2 days.
No air to the switch, when I press the pedal.. I tore the seat out and floor out and pulled valve to look where this line may connect to. and. nothing.. I have climb front to back to front to sides and I can't figure it out.. What am I missing.. I plugged everything back into the manifold the way it was disconnected (so I thought).. where does the air to the 1/4 airline on a stop/tail switch come from. What feeds the pass through on the manifold block? Is there a built in tee in the manifold..

I apologize if this seems like a silly question.. But, I am defeated and truly discouraged like no one can possibly imagine..