Bet you right Bota, Probably was a FD pumper truck or water tanker. The button was for the rotary siren and the tach for the engine driven pump. Check the front of the engine to see if it has ever had a driveshaft connected to it.


1953 Chevy 5-window 3100
In the Stovebolt Gallery
More pix on Picturetrail

Dave
Engine & Driveline Moderator

If you can't make seventy by an easy road, don't go. ~~ Mark Twain