1996 kenworth low air switch?

you just bought it and it dont work?? hope you bought it from an individual[s/p] if you got it from a dealer it wouldnt pass the inspection and they should replace it for ya.
But to answer you question in a 07 kw the beeper is under the dash behind the steering column real pita to get too. Dont know if its in the same loca in your though

 

I hear ya wish i could help ya a little more but thats bout all I got.
Good luck with getting it located

 

for sure never fails. Guess you dont have a back yard screwdriver around there to help ya huh? That would be nice and alot cheaper than kw

 

the switch for the low air light & buzzer are in the firewall behind the dash panel where the air guages are. also check the fuse box for a bad fuse,found this out at the scales in mo. a few years ago when mine wouldn't work.

 

Cross the wires on the switch you think is correct, if the buzzer/light does not come on you either have the wrong switch or no power to the circuit