GMC ST 350 1988, Wiring Diagram

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CIRCUIT
NO.
WIRE
SIZE
COLOR CAVITY DESCRIPTION
4 6 5 .8 D K G R N /W H T A 1 FUEL P U M P RELAY DRIVE
* 4 2 2 .5 T A N /B L K A 2 TO R Q U E CONVERTER C LU T C H
* 4 5 6 .5 T A N /B L K
A 2 U PSH IFT M A N - O N L Y
4 3 5 .8 G R A A 3 EGR SO LEN O ID
A 4 N O T USED
4 1 9
.5
B R N /W H T A 5 S Y S T E M C H EC K L A M P
4 3 9 .8 P N K /B LK A 6 1 2 V IG N ITIO N FUSED
A 7 N O T USED
4 6 1 .5 ORN A 8 SERIAL D A T A
4 5 1 .8 W H T /B L K A 9 A S S Y LINE L IN K /D IA G .
4 3 7
.5
BRN A 1 0 SPEED SENSOR
4 5 2 .8 BLK A 1 1 5 V RETURN B
4 5 0 1 .0 B L K /W H T A 1 2 S Y S T E M RETURN
4 4 0
1 .0 ORN B1 1 2 V B A T T E R Y FUSED
1 2 0 .8 T A N /W H T B 2 ELEC FUEL PU M P FUSED FEED
4 5 3 .8 BLK/R ED B 3 D IS TR IB U TO R REF L O W
B 4 N O T USED
4 3 0 .8 P P L /W H T B 5 D IS TR IB U TO R REF HIG H
B 6 N O T USED
B7 N O T USED
B 8 N O T USED
B 9 N O T USED
A 4 3 4 .5 O R N /B LK B 1 0
P A R K /N E U T R A L S W IT C H
B 11 N O T USED
B 1 2 N O T USED
A 4 2 2 - A U T O TR AN S O N LY
* 4 5 6 - M A N . TR A N S O N L Y h C A V IT Y A 2
CIRCUIT
NO.
WIRE
SIZE
COLOR CAVITY
DESCRIPTION
C1 N O T USED
C 2 N O T USED
4 4 4
.8 LT G R N /BLK C 3
STEPPER C O IL B LO W
4 4 3 .8 LT G R N /W H T C 4 STEPPER C O IL B HIG H
4 4 1 .8
LT B L U /W H T
C 5 STEPPER C O IL A HIGH
4 4 2 .8 LT B LU /B LK C 6 STEPPER C O IL A LO W
C 7 N O T USED
4 9 5 .8
LT B LU /O R N
C 8 PW R STRG C U T O U T S W
8 0 6 1 .0 PPI C 9 C R A N K DISCRETE FUSED
4 1 0 .8 YEL C 1 0 C O O L A N T TEM PER ATU R E
4 3 2 .5 LT GRN
C 1 1 M A N IF O L D A B S O LU T E PRESS
4 7 2 .8 T A N C 1 2 M A N IF O L D A IR T E M P S IG N A L
4 1 7 .5 D K BLU C 1 3 T H R O T T LE P O S ITIO N SENSOR
4 1 6 .5 G R A C 1 4 5 V SENSOR REFERENCE
C 1 5 N O T USED
4 4 0 1 .0 ORN C l 6 1 2 V B A T T E R Y FUSED
4 5 0 1 .0 B L K /W H T D1 S Y S T E M RETURN
4 6 9 .8 BLK/RED D 2 5 V S Y S T E M RETURN A
D 3 N O T USED
4 2 3 .8 W H T D 4 HEI S P A R K T IM IN G
4 2 4 .8 T A N /B L K D 5 HEI B Y P A S S
4 1 3 .5 T A N D 6 O X Y G E N SENSOR LO W
4 1 2 .5 PPL D 7 O X Y G E N SENSOR HIGH
D 8
N O T USED
1 5 1 .8 BLK D 9 G R O U N D
1 5 1 .8 BLK D 1 0 G R O U N D
D 1 1 N O T USED
D 1 2 N O T USED
D 1 3 N O T USED
D 1 4 N O T USED
D 1 5 N O T USED
4 6 7 .8 D K BLU D 1 6 IN JE C T O R A DRIVE
ELECTRO NIC C O N T R O L M O D U LE
( L N 8 - 4 C Y L. TBI)
SECTION F -P A G E 29