I just took my boat in for a Get Ready for Summer check up. Among the usual things plugs, impeller etc...., I had him check the Perko Dual battery switch that I have. he checked it and said that it was OK and I had a dead battery and the other one did OK with a load Test.<br />Here is the Fishy part... I installed a new battery and when I went to that side of the switch and turned the key it just sort of humms. Other side is OK. What is going on here?Should The Marine guy make it right since he charged me labor and said it was ok and had swapped the switch wire over to test it?<br />Thanks. <br /> 