i have a 1966, merc 650 (65hp) [s/n 1897689].<br />the thing about this eng. is that it seems to have a magneto rather than an alternator. at least that's what it looks like to me.<br />(like small aircraft have)<br />anyone have an idea what type of tach. i can use with this eng. and tips on how to install.<br />all the ones i have looked up seem to be for more modern eng's and i'm not sure if they are applicable to my type of motor.<br />any help would be greatly appreciated.