Dude, I have a busted gimbal ring I'm trying to get fixed at the moment. The gauge issue unfortunately is second at this time.

My plan though is to run a new ground wire forward to the nearest and easiest gauge to reach to see what that accomplishes. I'll post with any results.

Mike

i was not the original poster but i did ask a similar question a while back and have a similar issue...

so far i have only done the neg side...ran a #10 from batt terminal to dash terminal block ...no real change...
i also added a relay setup from rex marine to the hatch actuator (which ran really slow). this helped tremendously...this improvement suggests that indeed it is a positive side issue with the dash gauges...
my question...

from where does the +12vdc wire start back in the engine area that goes to the "run" position on the switch...this is the next one that i will replace...

thanks

gary

Of course it depends on your boat. Main 12+ comes from battery to the starter post, there should also be a small wire #10?? that is connected to the lug at the starter. Wire then goes in wiring harness on engine to big round plug. From there it goes thru wiring harness up to the dash.

My hatch motor also runs really slow this season. I have to help it up the first several inches too. Hmmm....a positive issue you say?? Have to check that out too I guess. But first, I have to get my transom assembly fixed.