installing in dash tach that only has 2places to hook up.all the tachs I used have 4 leads.power-ground-dist-lites for tach. how do I know what to hook where? beautiful tach ,no instructions. thanks ,kenny462
The stock tachometer only has a signal and ground. Only aftermarket tachometers have power, ground, signal, and lights. Just ground the case and hook the signal wire up.