I think (not sure though) you should see a vent line mounted on the fire wall.
I can swing by my bro n laws house and look at his if you need me to. His '97 is down for the count right now after some stupid kids broke into it and trashed it.
'66 cj5 V6 powered Tux Park.
'94 YJ 4" Rough Country, 33s, locked rear.
'96 XJ wifes
'02 Ram Quad cab (Jeep hauler)