2005 peterbilt 379 with 70 inch bunk blower motor not working

My blower motor in the bunk is not working. I know the blower motor actually works because I have a diesel fired Pro Heat that runs the factory blower and the blower is currently working with the Pro Heat on. I replaced the switch in the dash for the bunk blower motor. Checked 2 bunk relays and the fuse panel. I did notice that when I replaced the switch, I had low power on the hot side of the switch. At a loss...Any ideas?

 

I don't no how much I don't have a volt meter just a test light and it real dime that is at the switch on the dash for turning on the blower in the bunk light on the switch work so i no I have ground

 

Thanks you