Hey I could really use some help from the mustang gurus I recently replaced my motor and am now getting 3 different codes. A U1262 -SCP (J1850) Communication Bus Fault a P0357-Ignition Coil Primary circuit malfunction cylinder 7 and a p0307 missfire cylinder 7. Now the bus fault has me the most concerned and im really hoping its not a fried pcm that's causing it. I did notice today that the grounding strap from the block to the motor mount is not connected must have missed that on re assembly. The car starts right up and sounds fine to my amatuer ears don't hear a missfire or a dead cylinder. Could the grounding strap not being attached cause these codes? Also my headlights are not working. Everything else does as far as lights. The high beam indicator doesn't light when you try to flash it or put it on high beams I was also wondering if that strap could cause that problem as well. I'd really appreciate any help its our only car and we both work so it's a must fix asap situation but limited funds.