No. 7 cylinder is on the driver's side, 2nd from the back, so from the fan towards the cab, the cylinders are numbered 5-6-7-8.
I have a spec for '99-up 5.4L, and that order is 1-3-7-2-6-5-4-8; however, that's for Coil-On-Plug. I can't guarantee the order hasn't been changed since the move from wires, but I doubt it. (I'm guessing you got confused on plug wires??)
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