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yamaha 200 3.1 efi ox66 wiring issues

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  • yamaha 200 3.1 efi ox66 wiring issues

    i have a 1997 skeeter bass boat that had a 97 mercury 200 efi xri on it i bought a 1998 yamaha 200 efi ox66 its mounted it came with the controls but now i have a hang up i have four wires that are supposed to go to the gauges red,black,green,yellow can those four wires run the tach,trim gauge,fuel gauge,voltgauge, and also run low oil light and overheat i'm pulling my hair out trying to figure it out as yamaha has no real diagram for the gauge hookup anyones help would be greatly appreciated
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