If you’re not dead set on having EVERYTHING swapped over but want the 5.0 drivetrain in your 07 and have the AC, cruise and stock gages work, check out our plug and play coyote swap harness. Www.make-it-modular.com
I may be late to the party but I have since released a plug and play harness for ALL the 05-10 Mustangs. Has none of your mentioned issues.
www.make-it-modular.com
I doubt the PCM is suspect, is there a wire loop on the big fuse block connector going from E10 to B9? That essentially jumps the starting circuit on manual cars but if yours was an auto it gets completed with the transmission range switch.
www.youtube.com/mattsoppa
www.make-it-modular.com
We have a swap harness you can use so you don't have to swap all the harnesses over from the donor which is very time consuming
It's been a bit since visiting here but thanks Dino for the plug and feel free to contact me directly ( not thru here, it's clumsy ) about the swap and our plug and play swap harness!
I don't know if you got this build done or not but I have since released a plug and play swap harness to utilize the 11-14 Coyote ECU in your 05-09 car and have everything work including the speedo gages, ac and cruise. Link it my signature!
As a few may know I’ve had swapped my 07 GT with a Gen 1 Coyote by hardwiring it to accept an OEM gen 1 ECU which allowed all the gages, AC, and cruise to work.
Well this led to me developing and recently releasing a plug and play harness to replicate what I did without all the work...