Mercury V6 175 Diagnostic Manual page 223

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3.
The DMT should indicate battery voltage. If battery voltage is not present, check the purple lead for a loose or dirty
connection or damaged wiring.
b
90-8M0146617 eng JULY 2018
a -
Excitation circuit purple lead
b -
Alternator ground post
a
66377
© 2018 Mercury Marine
Charging and Starting System
Page 6B-9

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