Re: 2004 Yamaha water guage backlight stays on
Gauge is wired wrong. When do the lights for the other gauges come on (or do they?). Sometimes the back lights are wired to the ignition switch and are on anything the key is on. Unnecessary in my view but if that's the way it was done so be it. Generally the back lights are wired to the NAV/ANC light switch so they are on only when the switch is in the NAV position. If the other gauges work normally, disconnect the back light wire from its current source (not at the gauge) and connect it to the back light terminal on any other gauge.