DT225 suzuki gauges with no backlight?

[stratos20]

Does anyone have the wiring diagram for the 2 stroke Suzuki gauges? Mine do not light up, tried all the switches thinking they were on a switch but no luck, checked all the bulbs and they look ok. My fuel gauge has never worked since I bought the boat, got a new sender thinking it was bad and still doesn't work. The gauge itself works because I grounded the sending wire and it went to full. I pulled them out and they were all daisy chained to one another. I'm really lost on this one so any help will be greatly appreciated thanks.

[Harper]

My guess is that's there's a single fuse or breaker for the gauge lighting, behind the dashboard somewhere. That how mine's set up.
If I remember correctly, gauge lighting is on a purple wire as standard.

[Solarman]

The lights on guages usually are all linked to boats navagation/ anchor light switch. Commonly fuses are a culprit, but many boats also have dirty/corroded connections, or bad switches.

The best way to locate is with a 12v trouble light.

Good luck.