Hi Roy, there is a box location think is with the transmission ECM. It size is about 8 inches x 6 and
About 2 inches deep. The cover has eight screws and when removed you will see two rolls of relays
With a 10 amp fuse on each end. If your touch pad does not light in it will not shift and is a 10 amp fuse. In the relay group clearly marked is the trans neutral safety switch not getting power. Have run
Into this problem with snowbirds in desert leaving to go back north. Do not know where you are located but have Allison computer diagnostic software where I can plug into and troubleshooting
What is going on but really think you will find problem in the relay box. Dave Atherton Retired Cat
Mechanic