Battery Gauge - Mercury MerCruiser MCM 454 Mag MPI Service Manual

INSTRUMENTATION
6. Turn ignition switch to RUN.
7. Indicator needle of gauge being tested must read at position B. If not, replace gauge.
Position B (Typical)

Battery Gauge

TESTING
1. Remove cables from battery and fully charge battery.
2. Connect negative (–) jumper lead from battery to gauge terminal G (GND).
3. Connect positive (+) jumper lead from battery to gauge terminal I or +12 V.
Typical
4. Check gauge reading; if not as shown replace gauge.
Typical
Index
Page 4D-6
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SERVICE MANUAL NUMBER 23
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90-861326--1 MARCH 1999