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1976 Mark Electrical Shutdown

Hi Bill,

I started my 1976 Lincoln Mark IV today. After one minute at fast idle, I tapped the accelerator to slow the idle and the electrical system shut down completely. Dead as a door nail. No lights, no horn, no nothing. What's my solution?

Please help.

Charles

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Greetings Charles -

Some electrical problems can be a nightmare. When a vehicle has lost all power and those accessories such as you have described, the only wise approach is to diagnose the cause in a logical sequence. Is the battery in real good shape? In your case you should begin at the battery and follow the power path from the battery to the various junctions and connections downstream. From your description though your issue sounds strongly like the classic bad battery cable connections at the battery or ground at the engine and frame. Let us know what you find.

Sincerely,

Bill