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Adding a temperature gauge


Prof T

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I have a 2016 Crestliner with a 90 Merc Fourstroke. I’d like to add a temperature gauge. The motor has a sending unit mounted near the thermostat that I believe tells it when to go into “safe mode” if it overheats.

 

Is that same sensor used for a traditional dash temp gauge? Is wiring already in place in the harness? I’ve looked around the internet and can’t find any information or schematics.

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