Where tack wire goes with orange box

KENTON said

OK thanks, the instructions said if you had an ignition box like a MSD don’t hook it to the coil. I wasn’t sure if the orange box would be the same.

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MSD is capacitive discharge and works "sort of" like a photoflash. That is, when triggered, it dumps a hi voltage capacitor across the coil. Many people call more conventional systems "switched". Probably a better name is "Kettering." This includes breaker points, Mopar electronic, GM HEI conversions, the many "ready to run" imports, and Pertronix.

Everything except the MSD hooks to coil NEG just like old breaker points