Chevrolet DB90 Series, Service Manual

Page: 217 / 242

S ec. 12-211
CHASSIS ELECTRICAL AND INSTRUMENTS
3. A s s e m b le c o n n ecto r w ith in d ex rib and 5. P o s itio n bulkhead c o n n e c to r on d ash p a n el
g r o o v e a lig n e d . and in s t a ll two s c r e w s to a tta c h . T igh ten s c r e w s
4 . A fte r b olt i s tig h ten ed , v is u a lly in s p e c t f ir m ly , then p o s itio n the tw o -p o s t jun ction b lo c k
co n n ectio n to b e s u r e no t e r m in a ls have b een p u sh - on d ash p a n e l (if rem oved ) and a tta c h w ith s c r e w s ,
ed out o f c o n n ecto r .
ENGINE H A R N ESS-TO -IN STRU M EN T PANEL HARNESS BULKHEAD CONNECTOR
(CONVENTIONAL CAB MODELS) (SYMBOL Q )
T e r m in a l W ire
L e tte r C ir c u it S iz e C olor Code
AS O PEN
AT O PEN
AY IGNITION
F ro m C ontrol Sw itch " I G N " ........................ ...........................................12 W h t.-R e d . C r. T r .
To R eg u la to r #4 T e rm in a l ....................................................................24 B r n . -W ht. Str.
To F u e l S h u t-off S olen oid ................................................ ...................... 12 B lk.
To Ignition C oil "+" ..................................................................................20 Wht. -O rn . P p l. C r. T r.
AZ HOT ENGINE SWITCH
E ngine A la r m B u z z e r and Low W ater T e l l - t a l e ............................. 18 G r n .-W h t. T r .
To Hot E ngine S w i t c h .................................................................................. 16 B lk .
To Low C oolant I n d i c a t o r .........................................................................18 Wht.
BS LOW COOLANT PROBE
F ro m Low C oolant I n d i c a t o r ............................. ...................................... 18 Y e ll.
To Low C oolant P r o b e ............................................................................. 16 B lk .
BT GENERATOR "R" TERMINAL
F ro m G en erator "R" T e rm in a l .......................................................... 16 B lk .
To S ta r te r In terlock R elay #3 T e rm in a l . .................................. 16 B lk .
To Low C oolant I n d i c a t o r ........................................................................ 18 G rn.
BY R .H . DIRECTIONAL LAM P
F ro m In strum ent P a n el H a r n e ss ............................................ ....
To D ir e c tio n a l Switch H a r n e ss 8-W ay C onn ector
. . . . . 18 B lu e
To 2 - Way C onn ector to R .H . F ro n t D ir e c tio n a l Lam p . . . 16 B lk .
BZ L .H . DIRECTIONAL LA M P
F ro m S p liced C onn ection F ro m In stru m en t
P a n e l H a r n e ss 8-W ay C o n n e c t o r ..................................................... 18 B lu e -W h t. C r. T r.
To 2-W ay C onn ector To L .H . F ro n t D ir e c tio n a l Lam p . . . 16 B lk .
CS REGULATOR RELAY
F ro m C ontrol Sw itch " A C C " ....................................................................12 B r n .- B lk . T r.
To R eg u la to r #2 T e r m in a l ................................................ ...................... 12 B lk .
CT LOW OIL SWITCH
F r o m A la rm B u z z e r .................................................................................. 16 Y e ll. / / B lue T r.
To Low O il S w i t c h .......................................................................................16 B lk .
CY HEADLAM P HI-BEAM
F ro m D im m er Switch "HI" ....................................................................14 G r n .-W h t. C r. T r .
To 3-W ay C onn ector To H eadlam p Upper B e a m .........................14 B lk .
To 3-W ay C onn ector To H eadlam p Upper B e a m .........................14 L t . Grn.
CZ STARTER MAGNETIC SWITCH
F r o m C ontrol Sw itch "START" ................................................ .............12 M aroon
To S ta r te r In te rlo c k R elay #1 T e r m i n a l ............................................12 B lk .
DS HEADLAM P L.O-JBEAJMI
F ro m D im m e r Sw itch " L O " ....................................................................16 B r n .-W h t. C r. T r .
To 3 - Way C onn ector To H eadlam p Low B eam U n i t ....................16 B lk . or Tan
DT ENGINE TEM PERATURE SENDER UNIT
F ro m T em p era tu re Gauge ....................................................................18 G r n .-B lk . T r.
To E n gin e T em p eratu re Sen der U n i t .................................................16 B lk.
DY AMM ETER
F ro m 4 - Am p. F u se F ro m B a t t e r y ..................................................... 18 B lk .
To A m m ete r ....................................................................................... .... ........18 B lk .
DZ B A C K -U P LA M P F E E D
F ro m A c c e s s o r y B u s B ar 1 0 -A m p . F u s e .......................................16 G rn.
To B ack -U p Lam p S w i t c h .........................................................................16 B lk .
ES MARKER OR PARKING LAMPS
F ro m Main L ight Switch #4 T erm in a l ................................................ ...18 M aroon
To 3 - Way C onn ector To M ark er or P ark in g L a m p s ....................16 B lk .
ET HORN
F ro m Horn R elay .......................................................................................16 B lk .
To 8 - Way C onnector To Horn B u t t o n .................................................18 B lk .
EY AMMETER
F ro m A m m e t e r ............................................................................................18 B lk .-W h t. T r.
To 4 -A m p . F u s e ........................................................................................... .. 18 B lk .
CHEVROLET SERIES 70-90 HEAVY DUTY TRUCK SHOP MANUAL SUPPLEMENT