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    Mercruiser Wire Harness Help

    And I'm out today on my '70 Searay with a Mercruiser 165. Still running factory ignition.
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    Mercruiser Wire Harness Help

    R terminal is 12volts + only when key is in start position. This 12 volts gives a hotter spark for starting only. When key is released coil power comes thru the resistor wire. Probably 9 or 10 volts.
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    Mercruiser Wire Harness Help

    You may very well be right.
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    Mercruiser Wire Harness Help

    If the DIYer has removed/destroyed the whitish resistor wire from choke heat to coil positive, then use solid white with a ballast resistor.
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    Mercruiser Wire Harness Help

    There you go, coil negative gets brown to shift interuptor switch & to distributor (color not shown but I believe brown or black). Coil positive gets tan to solenoid "R" terminal and whitish resistor wire. For some reason someone has installed a ballast resistor on yours. I'm also seeing 5...
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    Mercruiser Wire Harness Help

    That is a Ford 888/302 engine yet the wire diagram in post #4 is for a GM 198/305. So you must not referance that diagram. From your last picture with the coil & all sorts of (read that as "too many/DIY handiwork" in my opinion) wires, you need to find a correct wire diagram & start from square...
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    Shifting to Neutral for starting

    Oh, BTW an '86 Bayliner may have a Volvo or an OMC Cobra stern drive. Volvo used Volvo 4 cylinder engines (IDK if 2.3L or not), OMC used 3.0L GM and 2.3L Ford based engines. In 1994 OMC & Volvo created a "Joint Venture" agreement and Volvos began looking like OMC Cobras. I'm going into this...
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    Shifting to Neutral for starting

    It's a cheap Morse (Maybe Teleflex?? but I think Morse) control. Best to grip it with several fingers along the square sides & pull straight out. While holding it out begin to rotate it. It will stay out until returned to neutral locking position. I'm sure some lube sprayed on will help but be...
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    Beeping

    Solid horn is overheat, beeping is low oil. If the oil is not low, then there is a problem with the oil level sensor system.
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    Electrical nightmare

    There are only 5 or 6 wires, it's a simple harness....On a pontoon. Check the wire run from the engine to the helm along the top of the pontoon. Most likely a rodent friend has chewed the harness.
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    Mercruiser Wire Harness Help

    All the Mercruiser harnesses were the same big connector from engine to dash harness.
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    1990 60 hp Evinrude fuel issue

    Remove the 3 carb drains. Fresh fuel in tank & pump ball until you have clean fuel from all 3 drains. This will flush fuel hose, ball, VRO & carbs.
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    Are dog clutch 5.0 & 5.8 Upper housings interchangeable with the 7.5L?

    According to the parts catalog they are the same part number assembly so long as the gear ratio is the same. (There were high altitude option ratios).
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    Carburetor nuts. 1999 Johnson 50 hp

    Did you tighten the nuts evenly?
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    1966 Johnson 20 Hp lower gear case to exhaust case sealant or gasket?

    No, it's just metal to metal.
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