Serious Misfire, Please help

[Hixc]

I have a 2004 Mercury Mountaineer 4.6L V8. I have a code for P0354 that comes up for ignition coil D. I have a multimeter and have tested the COP Harness connector and do not get a 12v signal. However i get a 12V signal on the other 7 Plugs. I have also tested for continuity between pin E35 on the PCM side to the COP Harness and checks out good. I have also checked for resistance and get a reading of 0 ohms. So i jumped a wire from the battery to get a 12v Signal to the COP harness and was able to get the plug to fire and pulse. However when i do that, my check engine light flashes and gives me a whole new mess of codes.
P2110
P0122
P0223
P0403
P0406
P2100
P2106
P2107
B1600
B1681

When i unplug the COP, these seem to go away. however now i have codes for
P0354
P0316
P0302

I have replaced every sparkplug and every single ignition coil 2wice.

 

[TechGuru]

I don't have a V8 but the general first troubleshooting method I'd heard for COP vehicles is to swap the COP with another plug and see if the problem moves to the other plug or not to determine if the COP is the problem...

 

[Trollslayer]

Make sure the little plastic clips that hold the connectors are tight.