Grounded Tach Wire Creates a Gremlin?

Scody21 said

What wiring harness did you use? That may be the wrong voltage regulator for the square back, think that’s for the round back. The mid 14 volts seems normal to me for charging. Mine runs there.


Should search “Madd Bypass” and dump the amp gauge for a volt gauge.

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Thanks, I'm considering the gauge change to voltmeter and the alternator to battery jumper. About the VR, that came specific from my friend/ guru who installed the Pertronix in the dist. So im not sure if there's anything different or special about it.
I don't get it, I researched this part of the build and went with super trouble free and it was perfect until this tach wire snafu. Harnesses came from Mr.Moparts, can't remember their source name but it was common. Maybe the tach wire short fritzed the gauge