I reviewed the FSM sonar section (SN.pdf) and found that the system uses both the back up relay to power/engage the sonar system when reversing...thus causing my shift lock to not work and as well my back up sonars...
all for a 10amp fuse located at position 12 of the passenger side interior fuse box. last one on the 2nd row / bottom.
It is labeled at "electronic parts" well it covers a few things i know now...LOL
I have both shift lock and rear sonar working perfectly fine now.
Images for the next guy:
FSM SN section says fuse 12 and 51 - my issue was fuse 12:
Fuse box schematic:
Fuse Box - passenger side interior - location 12 is bottom right fuse 10amp: