Okay I see exactly what your talking about, is that equipment mounted up there or just sitting up there, T
The one piece is the rehostat (thing with the dial) it controls your distribution blower fan speed Hi low, the other thing (with the attached temperature probe) is your in duct temperature senor, it controls the the distribution blower fan, IE on/off at the preset temperature set points.
Yup, they should be mounted some where other than on top of the hopper,
Thank you for the pictures, yes they speak a thousand words.
I will add more tomorrow.Must digest and add pictures of where mine are so you can get an under standing..
I also have a 140