Ford Repair Questions? Ask a Mechanic for Answers ASAP
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In an emergency, you can start the engine by momentarily jumping the Yellow wire coming from the battery to the ignition switch to the Red/Light Blue wire going from the ignition switch to the starting system. To power up heater blower, jump the same Yellow wire to the Grey/Yellow.
I hope this helps take care of your issue. Please let me know if there's anything else I can do to help.