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    Key switch replacement which one do I need?

    Have a 76 Thunderbolt 850 w/85hp but newer (unknown) mercury control box with an 8 pin/wire harness. Doesn’t have tilt/trim. Have no idea what model/type key switch to replace it with. Motor won’t run with kill wires hooked up to switch box. Suspecting ignition switch unless there’s a way to...
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    '76 Merc 85hp 850 Thunderbolt: Faulty Ignition Switch frying switch box?

    OK, here's what I have: No Spark, narrowed down to Switch Box: Trigger and Stator Tests within range both Ohms and DVA. Nothing coming out to Green Wires ( to the Coil Packs ) from the switch box (Power-In no Power-Out). However, when the "Kill Switch" Wires are connected to a DCV to via...
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    76 Merc 85hp Trigger Plate Test Help

    Hi guys/gals. Have a no spark situation, and I'm not quite sure how to test/check trigger plate/switch. I've checked the resistance of all 4 wires and no breaks anywhere, When I turn the motor over, I get no juice from any of the 4 wires off the trigger to the switch box either. But I'm NOT sure...
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    '76 Merc 85hp Wiring from Engine to Control Box Help

    Hi everyone! Really need some help here, when I went to pull apart the wiring harnesses that connect the control box, to the engine harness, the plugs fell completely apart and the wires broke/pulled through, leaving me NO color left on the wires to know which was connected to which. Obviously...
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    Stator Replacement Trying to Find Correct Part

    Hi everyone, I've been attempting to find the correct replacement stator for this older Merc 85hp Outboard, but no one I've contacted can figure it out, as the serial number pulls up nothing for anyone including me. Anyone have any ideas based on the serial number and photo's I've posted? Pretty...
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