smart craft gauges

[Siboatguy]

Hello i have a 05 sea ray sun dancer.. 320.. with 2 5.7 motors... my port side smart craft gauges don't work at all... All its telling me is Lost engine com on the tach... And also no fuel gauges,temp or oil pressure work... I check all the connections.. Unplugged and made sure it was clean and nothing.. Had the motors running the other day and a alarm went off because was running warm i think.. so its getting something.