12V signal for AMp. Aftermarket

[Arnie_one]

Hello, I have a problem with the aftermarket radio, I have the option 676A without DSP processor ok for me, but I can not find the cable for the 12V signal path to the ON origo ext. ampl.
From the original schematic I read its PIN13 and this pin is also the power for the antenna.

And my guess is that it's just connecting to the PIN13 12V supply, or a better way to connect the ISO?

This is a reduction to a connector from Connect2S
https://www.connects2downloads.co.uk/C2 ... M007.2.pdf