Rus & Others: This is in reply to reply # 9:
The hour meter replaces the original fuel gauge, since the relocated fuel tank takes a different type sending unit.
The siren switch was on it when I acquired the Jeep. Therefore, I assume at one time it must have had an electric siren, but absent when I acquired it.It did come with a hand crank siren on the right rear light post, which is now on an engine in Florida that needed one. It now has an electric siren again.
My entire Jeep can be seen on: Do a google search for fire jeeps in Minnesota, go to Fire Jeeps on cj3b.info, Fire Service Jeeps, go to fire jeeps in Minnesota,go to mystery jeep which will be the firest one shown. There may be a less involved way to access this, but if so I can't find it.
Serial number plate,left frame horn: Plate missing nor number stamped in frame.
Motor serial number: 2T16505 which is a pickup truck motor not original to my CJ 80" chassis.
This vehicle was assembled by a one-armed mechanic in middle Minnesota prior to 1960, with his niece providing the extra arm when needed. So, no wonder it was advertised as a 'mystery Jeep' and for sure is a one-of-one.