To get your illuminated cockpit adjusted properly, add these lines to the CFG files of your TR_AD-2, TR_AD-6 and TR_A-1H aircraft and save the file:
[LIGHTS]
panel= 0.00, 0.95, 0.50, fx_vclight
//Lateral (m), vertical (m), longitudinal (m)
This will place the vclight effect properly behind your instrument panel.