Cessna 1973 172 - Electrical System Schematic

ELECTRICAL SYSTEM schematic
TOOVtB-VOLTACE WARNING
iiGHr
TO OVER-VOLTAG( SENSOH
AND MASTfR SWITCH
TO AUTOMATIC PHOT |QPT|
, , ll, . PLUG BECEPIACLE
GROUND SERVICE
y FRO*
^^^)- to L
10 RADIO (OPT)
I RADIO I
L-^^y 10 RADIO lOPT)
I RADIO 7
TO RADIO |OPT)
I RADIO 3
L-i(2^i TO RADIO (GPIl
I RADIO 4
L^^^a TO RADIO (OPT)
I RADIO 5
L*^^* TO AUDIO AMPLIFIER (OPT)
FROM ALTERNATOR BUS
ANDINC IICHT (OPT)
CIRCUir BREAKER |PUSH-IO.HESET|
0^ FUSE -14- DIODE A/W"ESlSTOR
CAPACITOR INOISE FILTER!
TO NAVIGATION LIGHTS AND
OPTIONAL CONTROL WHEEL
MAP LIGHT
-TO TRANSMITTER RELAY |OPT|
TO IGNITION-STARTER SWITCH
to FLASHING BCACON [OPT)
TO DOOR POST MAP LIGHT (OPT)
OPTIONAL /S\/_TO DOME AND O
^siA" COURTESY LIGHTS
TO FUEL QUANTITY INDICATORS
O WING fLAP POSITION
INDICATOR
TO WING FLAP SVStEM
•-i(t^)i TO STROBE LIGHTS (OPt)
STROBE IT
•-•(l^^- to PITOT HEAT SYStEM (OPt|
PirOI HT
to TURN COORDINAtOR OR
lUBN OPtlONAL TURN AND BANK
OORD INDICAtOR
Figure 2-3.
2-4