Moparmike 9 Report post Posted December 6, 2017 My low air buzzer stop working but the light still works is there a buzzer in the dash on a circuit board ..my freightliner has a replaceable hoping the Mack does too.. 2000 rd688 Share this post Link to post Share on other sites
alex g 367 Report post Posted December 6, 2017 Should be a buzzer relay in fuse panel. Share this post Link to post Share on other sites
Mackpro 281 Report post Posted December 6, 2017 On a RD with an ETECH. there is usually a multi-buzzer that does many functions and and is located by the driver side door post below the dash. Share this post Link to post Share on other sites
Moparmike 9 Report post Posted December 7, 2017 Any pics of it..i see a switch on my firewall by the clutch with 3 wires going to it.. Share this post Link to post Share on other sites
Mackpro 281 Report post Posted December 7, 2017 I'm thinking its not on firewall . it's a black box mounted on the back side of the metal support bar that runs from the dash to the door post where the door hinges as on the driver side. It also does the turn signal clicking and power divider buzzing when engaged and engine shutdown buzzer Share this post Link to post Share on other sites
Moparmike 9 Report post Posted January 8 I found it thanks guy Share this post Link to post Share on other sites
