Chevrolet DB90 Series, Service Manual

Page: 226 / 242

CHASSIS ELECTRICAL AND INSTRUMENTS
C ircuit breaker num bers shown on W iring
D iagram s and in the tabulation which follow s are
identified in figure 7 in CHASSIS ELECTRICAL
AND INSTRUMENTS (SEC. 12) page 12-7 in
S erv ice Manual ST135-70. The tabulation which
follow s lis t s each circu it breaker number, the
circu it it c a r r ie s and the s iz e , color, and pattern
of the w ire which connects to each term inal.
C ir c u it
B r e a k e r
No.
10
11
CONSOLE COMPARTMENT CIRCUIT BREAKERS
(SERIES 90 TILT CAB MODELS)
W ire
S ize A m p s. C ircu it
10 GAUGES, ALARM , SOLENOID F E E D ,
AND COOLANT LOSS INDICATOR
F r o m Ign ition Bus B ar F r o m C ontrol Sw. "IGN. " . . 10
To S p liced C onnection: Oil P r e s s u r e G auge, F u e l
G auge, W ater T em p era tu re G auge, E ngine Oil
T em p era tu re G auge, S ta r te r Sw itch, E ngine A la r m
B u z z e r , Low C oolant In d icator, Ik T ach ograp h s . . 16
15 ELECTRIC SPE ED O M ETE R , AIR STO P SWITCH
AND TRAILER EMERGENCY STO P LIGHT SWITCH
F r o m Ignition B us Bar:
To E le c tr ic S p e ed o m e te r ............................................16
To A ir Stop Sw itch and T r a ile r E m e r g e n c y
Stop Lam p Sw itch " I G N . " ........................................... 14
5 DOME LAM P
F r o m B a tter y Bus Bar:
To 3-W ay C onnector to D om e Lam p
and S le e p e r Dom e L a m p ................................................ 16
15 TAIL LAMPS
F ro m B a ttery Bus Bar:
To L ight Switch No. 5 T e r m i n a l ..................................12
20 MARKER LAMPS
F ro m B attery Bus Bar:
To M arker Lam p S w i t c h .................................................... 12
20 DIRECTIONAL AND HAZARD WARNING
AND CIGAR LIGHTER
F r o m B a tter y Bus Bar:
To F la s h e r T e rm in a l " X " ................................................ 12
To C igar L i g h t e r ................................................................... 12
5 GAUGE AND INSTRUMENT LAMPS
F ro m L ight Switch N o. 2 T e r m i n a l ..................................16
To S p liced C onnection to In stru m en t L am ps
and C igar L igh ter L a m p ................................................ 18
30 HEATER BLOWER CONTROL, AIR PRESSURE
SWITCH, SPEEDOM ETER A D APT ER , B A C K -U P
LAM P SWITCH, STARTER SWITCH, AND
FIELD RELAY UNIT
F ro m A c c e s s o r y Bus Bar:
To H eater B low er C ontrol S w i t c h ..................................14
To In stru m en t P a n e l H a r n e ss C onnector
C avity "E Z ." ................................................................... 16
5 T E L L -T A L E LIGHTS
F ro m A c c e s s o r y Bus Bar:
To S p liced C onnection to Low A ir T e ll- t a le , Low
O il T e ll- t a le , Low W ater T e ll- t a le , and
D iffe r e n tia l L ock T e ll- t a le .......................................16
8 ENGINE BRAKE
F ro m A c c e s s o r y Bus Bar:
To Engine B rake S w i t c h ..................................................... 16
20 POWER WINDOW SWITCH
F ro m A c c e s s o r y Bus Bar:
To P o w er Window S w i t c h ................................................ 14
12 | 30 AUXILIARY LAMPS
F ro m B a tter y Bus B a r .......................................................... 12
To A u x ilia ry Lam p S w i t c h .....................................................12
C olor Code
W ht-R ed C r. Tr.
Wht / / Red T r.
W ht-B lk & Red C r. T r.
W ht-B lk & Red Cr. T r.
Org.
B r n -B lk . C r. T r.
O r g -B lk . T r.
Blue
Red
Grn.
Gray
B rn.
Wht / / Red T r.
R ed-W ht T r.
B r n .- B lk . T r.
R ed-W ht. T r.
Red
Org. -B lk . T r.
ffUSE BLOCKS AND FUSES
A typical fu se block used on S e r ie s 70 through
90 tilt cab m odels is shown in figure 6, otherw ise
inform ation applicable to fuse blocks and fu ses
rem ains the sam e as covered in CHASSIS ELEC­
TRICAL AND INSTRUMENTS (SEC. 12) in Service
Manual ST135-70.
CHEVROLET SERIES 70-90 HEAVY DUTY TRUCK SHOP MANUAL SUPPLEMENT