Yamaha Digital Gauge Backlighting

[<Jeff K>]

Does anyone know if the typical late model Yami LCD Digital Gauges have a provision for backlighting? i.e. Speedo part# 6YR-W0035-F0-00. I have both the Tach & Speedo running off a 2004 Merc 90hp 4 Stroke and every other function is up and running (inc the Merc trim sensor via the Yami LCD readout)...Thanks

[<boats.net>]

The blue wire on the the gauges is for the backlight, connect it to nav light switch on boat or connect it the yellow wire on ignition switch if you want the gauge lights to come on when the key is turned on