The light should light up, yes. It's possible your tuner interface on your empeg is damaged (check all the wires to the tuner plug on the harness are ok) or there is a fault within the empeg itself - we've seen one like this, but as it was one of our dev units it's very possible I destroyed it by mistake when doing something else... :)

It's unlikely the tuner module itself is bad, but I suspect support will ask for both your head unit and tuner to be returned so we can check them together.

Sorry!

Hugo