Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 476Get this manual
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SERVICE MANUAL NUMBER 24
aIgnition Coil Trigger SignalBatteryRelayModule AdvanceSignal ConverterPick Up CoilGroundManifoldCoolant TemperatureECMICREF HIBypassREF LOGroundedNo Voltage AppliedNot