Gidday All,Before I go and get stuck into it does anybody know if the fuel and oil tank levels should show up straight off without having to empty tanks and performing the calibration process.The motor is 2006 135hp,the sounder/plotter is 6500 trackfish.Also the trim will not calibrate.The calibration screen comes up but will not calibrate.All the smartcraft/fuel y cable boxes ticked etc,if anyone has the system set up in their boat some clues would be good.The sales person where i got it from say's northstar to navman no problem it is only a change of name on the product.There is a fault message comes up in the engine fault page saying communication error.The gauges are the SC1000 type with all the functions ,Trim,Fuel,Speed etc etc.So if anyone has some info Fantastic.Jim