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6 The PerTronix ignitions, whether it is an under-cap replacement or pre-installed in a new distributor, rely on full 12-volts to the module. As such, the stock pink resistor wire between the ignition switch and the coil must be bypassed. We removed the ignition switch from the dash and ran a length of red wire from the PerTronix to the ignition switch, connecting it to the red/green stripe wire at the ignition. The connection here is temporary, as a new ignition switch wiring connector was on order to replace the damaged wiring you see here.