Last night was driving down the highway and my truck started severely pulsating around 1200-1400 RPM and didnt trip the check engine light. Got halfway home and it was fine. Definitely knew it was a misfire but figured it was just a fluke. This morning was out again and it started happening again and this time it was consistent and it did trip the light. So I get home and to read the code and I get P0358, Cylinder H primary/secondary circuit fault? I replaced the cylinder 8 ignition coil and had no luck. 2006 5.4L. Can anyone give me some guidance? Im gonna follow the wiring after work tomorrow to check for breaks as its raining now. Thanks in advance.

Update: Checked wires to best of my ability and couldnt see any breaks. The power wire going to the coil is getting power and Im not sure how to check the other wire. The coils themselves are good (checked resistance with meter) so Im left thinking its the spark plug but wouldnt I be getting a different code?

Any advice or tips at this point are helpful. Really need this thing up and running again.