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International Automotive Technicians Network
Re: 1999 F150 5.4L
Posted to Technical Discussion Forum on 3/21/2013 1 Reply

I am gonna save you some time here.

First forget all the speculation posted that you need a different wiring harness from a different vehicle.

Next - Go to your service information and print out the engine wiring diagrams for F150's from 1997 thru 2005.

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