The VC of the stock CRJ-700 has several switches for lights that were never "hooked up". Here are some lines to be added to the [LIGHTS] section of "aircraft.cfg" that will give you vestibule lights (by the exit), light wash on the body of the aircraft when the landing lights are on (fairly realistic), taxi-recogntion lights, and wing inspection lights to check the leading edge for icing.


//Types: 4=cockpit, 5=landing, 6=taxi, 7=recogntion, 8=wing, 9=logo, 10=cabin
light.9 = 4,  -17.00,   2.00,   2.50, fx_vclight,     //vestibule lights
light.10= 4,  -16.50,  -2.50,   2.00, fx_vclight,
light.11= 5,  -39.00,  -5.00,  -2.50, fx_vclighth,    //landing light wash
light.12= 5,  -39.00,   5.00,  -2.50, fx_vclighth,
light.13= 6,  -46.20,  -6.10,  -1.75, fx_navwhi,      //taxi-recognition lights
light.14= 6,  -46.20,   6.10,  -1.75, fx_navwhi,
light.15= 8,  -48.00,  -13.50,  0.50, fx_vclighth,    //wing inspection lights
light.16= 8,  -48.00,   13.50,  0.50, fx_vclighth,


Note that I had to use two low intensity "vclight" effects to prevent illuminating objects outside of the cabin. Also, I did not connect the logo lights since the model already applies them when the instrument panel is on.

For more information on CRJ-700 lighting, you may refer to the document at:
http://www.rcoco.com/sdoc/data/pdfs/plane/bombardier/CRJ-700-900-SERIES/systems/...

Peter