Ed,
There is a wire that routes 12 volts to the coil from the starter when the ignition switch is in the starting position, but power is redirected through the resistance wire when the ignition switch it is in the run position. This way the coil gets 12 volts for better spark and easier starting for a few seconds during starting, and then returns to 8-9V through the resistance wire when running. This prevents ignition component from burning out from exposure to excessive voltage during normal operation. Check that the two smaller wires are attached to the starter in the correct position (R and S terminals). You should have 12 volts (or continuity at the coil with the battery terminal) with the ignition switch held in the start position when the starter wires are installed and functioning correctly. You can also test this by jumping the coil on the positive side from the positive side of the battery while cranking the engine. It will fire , run and stay running even after you remove the jumper if the problem is with starter wires or starter wire connections. Try to remove the jumper wire as soon as possible if you jump it. The ignition system is only made to experience 12v for a short time before dropping back.
HTH
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