Intermitent tachometer

[mtstringer]

"Hi all, I have a '96 merc

"Hi all, I have a '96 mercury 150 hp XRi and my tach is intermitent. I have changed out the gauge and read out the rectifier and swapped grey wire to other rectifier. One start it works next it doesn't. Hope someone has some ideas.
Thanks"

 

[galamb]

"Mark, have you checked all yo

"Mark, have you checked all your wiring including the ground - may be something as simple as a loose wire, particularly at the dash end of things..."