Mercury 305 CID - Battery Gauge; Testing

INSTRUMENTATION - 4D-390-823225--1 1096
5. Connect jumper wire from terminal G (GND) to
terminal S (SEND).
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6. Turn ignition switch to RUN.
7. Indicator needle of gauge being tested must read
at position B. If not, replace gauge.
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Position B
Typical
Battery Gauge
TESTING
1. Remove cables from battery and fully charge bat-
tery.
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.
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4. Check gauge reading; if not as shown replace
gauge.
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Typical