My understanding from Panasonic is that the MK5 fingerprint reader is a different cable and connects in a different location and not interchangeable with the MK1-4.
I know Panasonic switched biometric modules from the Authentec module in the MK1-4 to the EVE FA module in the MK5.
I checked through my pictures but unfortunately I don't have any pictures of the MK5 FP module and I don't currently have access to the MK5 service manual.
I am also going to check with my other tech as she may have some pictures of the MK5 FP module.
Thanks for the information.