I have a 70's starcraft capri,with an 87 80HP Merc. The tach is not working.albeit,it appears to be hooked up.What wire on the tach head should i be checking? there are 2 wires hooked up to it. and what should i be lookin for,power,ground or resistance???? This is my only problem now,but,please check my other post about why is it runnin? I would love some input.
