Stop in for a cup of coffee

Ok so making sure I’m following you. Connect the NSS to the battery(check), jump the two terminals above, then turn key to start?
Not quite.
Connect the NSS terminal to a good ground, which could be the battery negative clamp.
Then power the relay direct from the battery.
Connecting the BAT terminal to the I,
upload_2021-8-17_13-0-3-png.png

is just like powering the S2 wire when turning the key to start.