System Components; Precautions - Mercury 150 EFI Service Manual

CHARGING & STARTING SYSTEM

System Components

The battery charging system consists of the alternator, battery, ignition switch, starter so-
lenoid and the wiring which connects these components.
BLK
BLK
d
BLK
a -
b -
c -
d -

Precautions

The following precautions must be observed when working on the alternator system. Fail-
ure to observe these precautions may result in serious damage to the alternator system.
1. Do not attempt to polarize the alternator.
2. Do not short across or ground any of the terminals on the alternator, except as specifi-
cally instructed.
3. Never disconnect the alternator output lead, regulator harness or battery cables when
the alternator is being driven by the engine.
4. Always remove NEGATIVE (–) battery cable from battery before working on alternator
system.
5. When installing battery, be sure to connect the NEGATIVE (–) (GROUNDED) battery
cable to NEGATIVE (–) battery terminal and the POSITIVE (+) battery cable to POSI-
TIVE (+) battery terminal.
6. When using a charger or booster battery, connect it in parallel with existing battery
(POSITIVE to POSITIVE; NEGATIVE to NEGATIVE).
Page 2B-12
YEL/RED
a
a
RED
RED
RED
RED
b
b
Alternator
Battery
20 Ampere Fuse
Starter Solenoid
PPL
RED
RED
90-883728 JULY 2001
c
58911