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Ruth · 02-20-2020, 07:29 PM

Hi Tom. In your article on the Tach it states "Two wire leads from the tach attach to the two coil primary terminals". Does that mean your tach is 'Hot' all the time? Neg side on coil is connected directly to terminal box on Pos ground system? Please explain.

I had to rewire so my ignition switch was 'before' the coil instead of 'after' like a original Model A should be wired so my tach was not powered up all the time.

02-20-2020, 07:29 PM	#7
Ruth Senior Member Join Date: May 2016 Location: Glide, Oregon Posts: 1,339	Re: Adding Guages Hi Tom. In your article on the Tach it states "Two wire leads from the tach attach to the two coil primary terminals". Does that mean your tach is 'Hot' all the time? Neg side on coil is connected directly to terminal box on Pos ground system? Please explain. I had to rewire so my ignition switch was 'before' the coil instead of 'after' like a original Model A should be wired so my tach was not powered up all the time.