My champion's panel gauges dont work could this be a grounding issue? The only gauge that works is the fuel guage. My water preasure gauge doesnt work either.I dont know yet about the thermosat opening for the water flow I guess this would explain the preasure guage any help would be great.I dont even know what model it is. 17 1/2 foot single consel 150hp mariner.1984 or 85 I'll try to sub mit photos![]()