Concorde, where is the Avionics switch?

Ive been watching video tutorials on starting up the Concorde. After the batteries are on the Avionics come on and the FMS lights up in every video. But when I try it the avionics do not turn on. Is there a switch for the avionics somewhere?

There is no avionics switch like on a Cessna. This is a large plane like an airbus. The avionics come on automatically.

You should change your title to reflect the actual problem you’re having which is that your avionics aren’t turning on. That is a separate issue. Possibly a bad install or a bad livery.