Guage back lights stopped working and (dimmer setting has no effect) amd fuel guage no longer working. in addition the fuel time remaining gauge also shows zero hr/l. Strange thing is even though guage reads zero there is no low fuel alarm. I have tried reconnecting all pugs and cleaning them to the faria box and the gauges themselves. Disconnecting plugs to fuel gauge in daisy chain diable all gauges. I am at a loss what to try next ? Boat is 2009 220