Typically the connector comes unhooked from the gasket, and ford sells a insert that helps hold them together. The symptoms for this would be a CEL, running rough(can be intermittent), and if resistance is affected it will fail a buzz test for one or more cylinders.
As far as the harness wearing out, when you have glow plugs that pull too many amps the harness and connectors can melt and make them impossible to separate from each other, and will ruin connector pins, as well as a small section of the engine wire harness. Symptoms would be a hard start, or running rough for a few minutes when cold.
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Sat, January 9th, 2010, 10:00 PM
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