my 1995 johnson 115 crossflow's tach cuts out and rarely works and when it does it only registers below 1000 rpm's. i've been advised to do a voltage check at the battery when running and i get 13.5 volts through all speeds. i've also checked connections and cleaned. my question is this, if my regulator/rectifier is putting out 13.5 volts can it still be faulty keeping my tach. from working? also i just purchased a new complete set of omc gauges on ebay....only problem the new tach. has a 8 pin wire reciever and my current unit doesn't any help locating a plug would be appreciated.thanks to any one who replies!