INU heading

[colubridae]

how do I input the initial aircraft heading for normal/prec INU start?

 

I've tried the dial/knob on the right hand panel just aft of the autopilot switches at various times during the startup. 

and the MH man switch on the right side panel.

they seem to have not affect.

 

heading is always taken from the editor set-up.

Is this correct?

 

please