2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 113Get this manual
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IGNITION
METER SCALE
READING (V) INPUT VOLTAGE ORN-BLK 5V OUTPUT VOLTAGE (IDLE) PNKBLK 695705 mV
TEST HARNESS LEADS BLK PNK ORN ORN DC VOLTS
90-888465 JUNE