Hi,

Was wondering how to connect the tachometer and which one do I need to use to get it work accurately??

In my mind:

https://www.ebay.com/itm/2-1-16-GlowShift-Black-Elite-10-Tachometer-Gauge-w-Adjustable-RPM-Warnings/292142709128?epid=595836916&hash=item44050ff988:g:NlEAAOSwQiFab30O&vxp=mtr

according to description should work on 1 cyl engine?