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Electronics-Stereo/GPS/Chartplotter/Electrical etc

Tachometer and speedometer wiring

Thread starter ryancarlson461
Start date Feb 26, 2020

ryancarlson461

Active Member

Feb 26, 2020

Was hoping I could get some help with this. I have a engine that was pulled from a 2015 SX190 California. I have wire harness, fuel pump, however, I do not have any gauges, or key switch. The thought is to put it into a mini jet boat. I am having a hard time understanding the wiring schematics as they do not make it very clear. I need to know if I need to buy a wire harness that plugs into the engine harness then to the gauges. Or if it just takes the gauges (tach, speedometer and key) and have the engine harness connect straight into them? Let me know if this makes sense or if more clarification is needed. Any help would be appreciated along with pictures if ya got them!

Thanks,
Ryan