digital gauges, unable to read

[dangbarth]

1997 twin ox66 225's

I repowered with OB's mentioned above in 2002. bought them used, came with everything i needed. The digital gauges worked fine 'til about 2 or 3 yrs ago. now i can't read them , don't know if they work or not. 3 of the 4 gauges are unreadable.
After thinking about it the FF and Loran quit working on me in 2001, could there be an electrical problem that causes the sensitive electronics to burn out? I am hesitating to replace anything until I figure out why the gauges failed.

[boats.net]

Might have electrical problems but the gauges are on engine wiring circuit and electronics in boat are on boat wiring circuit. Hard to say, need to have electrical tested.