Went to take the boat out yesterday, was in the driveway and wanted to make sure all is good. Turn the key and nothing, no guages, etc. I had the batteries on a trickle charge the night before and it started the day before, but my battery was not 100%. I checked my battery with a battery tester and it checks out good.
I checked voltage at the battery terminal on the ignition switch, 12 volts. When I turn the key power goes away, release the key it starts to come back.
Has the MERC, 454, 1986