MerCruiser 305 CID (5.0L) Service Manual page 648

SERVICE MANUAL NUMBER 24
MEFI 3 With GM EST Distributor
SYSTEM/IGNITION RELAY SYSTEM/IGNITION RELAY
TO
B 2 RED
B+
TO
2 RED
A
B+
3 PNK
FROM
IGNITION
RELAY
902 RED
TEMP SENDER
TO IGN
TO TEMP GAUGE
TO TACH
Index
90-861327--1 OCTOBER 1999
TO FUEL PUMP RELAY
FUSE
2 RED
ECM BAT FUSE/
DLC 15A
TO IGNITION
COIL TERM
121 WHT
A
F
B
901 TAN E
3 PNK
C
D
PUR
D
C
TAN
E
B
GRY
F
A
440 0RN
440 0RN
IGN / INJ FUSE
902 RED
902 RED
439 PNK
150
BLK
902 RED
423 WHT
430 PUR/WHT
424 TAN/BLK
453 RED/BLK
208 BRN
585 TAN/WHT
29 DK GRN
CONNECTOR HALVES
TAN/BLU
BLU/TAN
YEL/BLK
BATTERY
J2-1
FEED
TO DLC TO DLC
CONNECTOR CONNECTOR
J2-32
IGNITION
TO INJECTORS
TO FUEL
PUMP RELAY
450
ECM
J1-4
BLK
GROUND
450
J1-5
ECM
BLK
GROUND
450
J1-20 ECM
BLK
GROUND
IGNITION
J1-10
CONTROL
DIST. REF. HIGH
J2-10
BYPASS
J1-24
DIST. REF. LOW
J1-3
J2-20
LOAD ANTICIPATION
TRANSMISSION
J2-8
OVERTEMP
AUDIO WARNING
J1-26
CIRCUIT
DIAGNOSTICS
76099
Page 5G-21