how do i hook up a tachometer to an sr?

Canada Nissan Automotive
1

ya i got a autometer tach and im not sure how to hook it up, its got 4 wires, 12v dash light, 12v ignition, ground, and one for the eather coil or a tach terminal and that is the one im not sure about.

thanks

2

Negative side of your ignition coil

3

ill try that thank cody