Those 99 Evinrude 4s were Suzuki’s, although i think they predate the Haines group’s stewardship of that brand.
https://www.boatsales.com.au/editori...-strokes-8206/
Not sure if later Suzuki gauges would work, I’m pretty sure yours won’t be nmea2k motors. I think you’ll be limited to “analog” digital gauges - ie. they may display digital but you’re still feeding them analog information. Hopefully a Suzuki guru can shed some light.
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