To access the hot wire for the ignition switch on a 1971 Mustang, first, ensure the battery is disconnected for safety. Then, remove the steering column cover to expose the ignition switch wiring. The hot wire is typically a red or yellow wire connected to the ignition switch; you can trace it from the battery or fuse box to the ignition switch. Once located, you can test it with a multimeter to confirm it is receiving power.
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