Eureka vactronic check bag issue

[2011hoover700]

Good morning I'm wondering what is causing my eureka vactronic check bag indicator not to work. Did I wire something wrong or might dust get in the tube to activate it?
I appreciate your help.
2011hoover700.

 

[dysonman1]

How are you testing it? If you put your hand over the opening on the machine, the light will NOT come on due to the pressure sensing tube. Like an Electrolux, you have to insert a wand into the opening to make the light come on.