Hi,
Great you got the SWC working. Your wiring is apparently different then mine since mine were connected to the yellow connector (IIRC).
The antenna is indeed powered. Depending on your original equipment, the antenna wire is located in the back of the car (in my ZT-T it was in the boot well). If so, you will need an extension cable to connect the radio to the antenna lead in the back.
I will try to find the posts I made about this for my ZT-T...
Edit: Found it
https://www.the75andztclub.co.uk/for...d.php?t=286792