1966 Coronet 4speed reverse light wiring

I need a bit of help. I am having difficulty figuring out the reverse light switch and wiring from the manual a833 trans to the backup lights. I have the color coded schematic, the correct 2 prong plug on transmission, correct wiring harness but no clue what the two wires connect to. Appears from the schematic they connect to the starter relay but the 4 speed relay only has one available connector.

Can someone send me an image of theirs or better yet an explanation of the wiring? I have brand new harnesses front to back on my car. Thank you for the help.

I have an original harness for the trunk if you need it

Power should go from one wire, through the switch and back to the bulkhead connector when it then goes to the reverse lights.

No way those wires connect to the start relay. That would be for an automatic trans