Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 642Get this manual
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SERVICE MANUAL NUMBER 24
SENSOR GROUND THROTTLE POSITION SENSOR SIGNAL +5 VOLT REFERENCE
C 814 BLK
416 GRY 432 LT GRN
J1-31 J1-9
+5 VOLT REFER