Yamaha - Housing, thermostat - 6GR-12417-00-9S Blue Sea Systems Switches The high backrest just means

The high backrest just means it's more difficult to fly off on the more wild rides

OverviewThis 8–18V voltmeter gives you a straightforward look at your boat’s electrical health without bouncing around every time the hull moves

it’s made to handle years of use in harsh marine conditions

Built for marine operating conditions

your time on the water feels smoother

Yamaha - Housing, thermostat - 6GR-12417-00-9S Blue Sea Systems Switches The high backrest just means6GR 12417 00 9S HOUSING, THERMOSTAT WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.