[mnhoff]

I was wondering if I have only ever had just the light as well. I  have driven a number of trucks over the years and remember back when I got my class 1A in Canada that warning buzzer was mandatory in my pretest by the professial driver trainer. Any way I like your thought in adding in the buzzer. Do you re-call where you purchased such a item and did you just wire a 12 volt warning buzzer to where the red light would light when pressure hits 50 psi approx. Mike