Cirrus SR20 Pilot Operating Handbook page 250

Section 7 Cirrus Design
Airplane and Systems Description SR20
The panel lights operate on 28 VDC supplied through the 5-amp
CABIN LIGHTS circuit breaker on MAIN BUS 1.
Reading Lights
Individual eyeball-type reading lights are installed in the headliner
above each passenger position. Each light is aimed by positioning the
lens in the socket and is controlled by a push-button switch located
next to the light. The pilot and copilot reading lights are also dimmable
through the PANEL lights control on the instrument panel bolster. The
reading lights are powered by 28 VDC supplied through the 5-amp
CABIN LIGHTS circuit breaker on MAIN BUS 1.
Overhead Dome Light
General cabin lighting is provided by a dome light located in the
headliner at the approximate center of the cabin.
Serials 2016 thru 2302:
The dome light is controlled through the OVERHEAD light control on
the instrument panel bolster or by the switch next to the light assembly
on the ceiling of the airplane. On airplanes with OVERHEAD light
control on the instrument panel bolster, rotating the knob clockwise
from the off position will illuminate the light and control its intensity.
The dome light is powered by 28 VDC supplied through the 5-amp
CABIN LIGHTS circuit breaker on MAIN BUS 1.
Serials 2303 & subs w/o Convenience Lighting:
The dome light is controlled through the cabin light switch located next
to the light assembly on the ceiling of the airplane.
The dome light is powered by 28 VDC supplied through the 5-amp
CABIN LIGHTS circuit breaker on MAIN BUS 1.
7-66 P/N 21399-004
Revision A1