TM 1-1510-223-10            2-75 lighting,  as  required.  The  lights  are  protected  by  the 7.5-ampere  FLT  INST  circuit  breaker,  located  on  the overhead circuit breaker panel (fig. 2-7). Variable light in- tensity,   for   both   lights   is   provided   through   the   IN- STRUMENT PANEL rheostat, located in the IR FLOOD LIGHTS switch section, on the overhead control panel. Individual intensity control is provided by a switch plac- arded BRT - DIM - OFF, located on each utility light. (2)    Glareshield lights. Lights are mounted in the glareshield overhang along the top edge of the instru- ment panel, providing overall instrument panel IR illumi- nation.  The  circuit  is  protected  by  a  5-ampere  circuit breaker placarded INST INDIRECT on the overhead cir- cuit breaker panel (fig. 2-7). Control is provided by the rheostat switch placarded GLARESHIELD on the over- head control panel, located in the IR FLOOD LIGHTS switch section (fig. 2-13). Turning the control clockwise from OFF, illuminates the lights and increases their bril- liance. (3)    Flood  light.  A  single  overhead  cockpit  flood light is installed. This light provides overall IR illumination of the entire cockpit area. The circuit is protected by a 7.5-ampere circuit breaker placarded FLT INST, located on the overhead circuit breaker panel (fig. 2-7). Control is provided by the rheostat/switch, placarded PED EXT/ COCKPIT, located in the IR FLOOD LIGHTS switch sec- tion of the overhead control panel (fig. 2-13). Turning the control clockwise from OFF, illuminates the light and in- creases its brilliance. (4)    Flight instrument lights. Each individual flight instrument contains internal lamps for illumination. The circuit  is  protected  by  the  7.5-ampere  circuit  breaker placarded  FLT  INST,  located  on  the  overhead  circuit breaker panel (fig. 2-7). Control is provided by the two rheostat   switches   placarded   PILOT   INSTRUMENTS and COPILOT INSTRUMENTS, located on the overhead control panel (fig. 2-13). Turning the control clockwise from OFF, illuminates the lights and increases their bril- liance. (5)    Engine instrument lights. Each individual en- gine instrument contains internal lamps for illumination. The circuit is protected by the 7.5-ampere circuit breaker placarded  FLT  INST,  located  on  the  overhead  circuit breaker panel (fig. 2-7). Control is provided by the rheo- stat switch placarded ENGINE INSTRUMENTS on the overhead control panel (fig. 2-13). Turning the control clockwise from OFF, illuminates the lights and increases their brilliance. (6)    Overhead panel lights. Lamps illuminating the overhead circuit breaker, control, and fuel management panels are protected by the 7.5-ampere circuit breaker, placarded OVHD on the overhead circuit breaker panel (fig. 2-7). Control is provided by the rheostat switch plac- arded  OVERHEAD  PANEL,  located  on  the  overhead control panel (fig. 2-13). Turning the control clockwise from OFF, illuminates the lights and increases their bril- liance. (7)    Subpanel and console lights. Lights on the pi- lot’s and copilot’s subpanels, console edge-lighted pan- els,   mission   control   panel,   and   pedestal   extension panels are protected by the 7.5-ampere circuit breaker, placarded SUBPNL & CONSOLE on the overhead circuit breaker panel (fig. 2-7). Control is provided by two rheo- stat switches placarded SUBPANEL and CONSOLE on the overhead control panel (fig. 2-13). Turning the con- trols clockwise from OFF, illuminates the lights and in- creases their brilliance. (8)    Outside air temperature light. Two post lights are  mounted  adjacent  to  the  outside  air  temperature gage on the left cockpit sidewall. The circuit is protected by the 7.5-ampere circuit breaker placarded FLT INST on the overhead circuit breaker panel (fig. 2-7). Control is provided by a pushbutton switch adjacent to the gage. Light intensity is not adjustable. b.   Cabin Lighting. (1)    Threshold and spar cover lights. A threshold light is installed just above floor level on the left side of the cabin, just inside the cabin door. A spar cover light is installed on the left side of the sunken aisle, immediately aft of the main spar cover. Both circuits are protected by a 5-ampere circuit breaker located in the battery box, and are connected to the emergency battery bus. Both lights are  controlled  by  a  switch  mounted  adjacent  to  the threshold light. If the lights are illuminated, closing the cabin door will automatically extinguish them. (2)    Cabin aisle lights. Three cabin aisle lights are installed  in  the  cabin  aisle.  Control  is  provided  by  the CABIN  LIGHTS  BRIGHT  -  DIM  switch  located  on  the pilot’s subpanel. (3)    Cabin utility lights. A utility light is located adja- cent to each overhead flood light in the cabin area. The utility lights are individually controlled by the rheostat- switch placarded OFF - ON - BRT, located on the back of each  light.  A  momentary  ON  switch  is  located  in  the center of the rheostat. The light is capable of producing a red or white spotlight by adjusting a diaphragm, located in front of the light. To remove the light from the stationary position, pull down on the light. The light is connected to the light housing by an 11 inch coiled cord that extends to approximately 50 inches. Power for the utility lights is provided through the 5-ampere circuit breaker placarded