hi there ..well I just bought a 17' mark twain , it came with an 88hp Evinrude witch I believe its not the original because not all of the gauges work like I see that the battery works, and speedometer worked after I replaced the hose to the thing that goes in the water but I don't want to mess with the rpm an fuel gauges nor the tach , there wired and all but don't read anything , I need help with how to troubleshoot them could it be that the gauges are jus not working? maybe if buying new ones will solve the problem ... any help is appreciated guys thanks
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