help duratec 3.0 V6 plug Ford 500

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Oct 18, 2009
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I replaced the spark plugs in Ford 500, but i dont know what to do with this plug ?I dont see where it should be connected, can you guys help me out ?

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Originally Posted By: GSCJR
Looks like a test port or a plug for a dealer add on; Leave it alone. HTH


+1 I would put some dielectric grease in it then wrap it in electrical tape.
 
Could be an octane adjust pigtail. They change the calibration a bit when you remove the jumper. They were on Fords for a very long time.
 
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